Search a number
-
+
1011220011220 = 22550561000561
BaseRepresentation
bin11101011011100010110…
…10001101100011010100
310120200010122212001101011
432231301122031203110
5113031434310324340
62052314214142004
7133025655163006
oct16556132154324
93520118761334
101011220011220
1135a946374441
12143b93651904
1374485965a33
1436d2c628376
151b4867b40ea
hexeb7168d8d4

1011220011220 has 12 divisors (see below), whose sum is σ = 2123562023604. Its totient is φ = 404488004480.

The previous prime is 1011220011203. The next prime is 1011220011223. The reversal of 1011220011220 is 221100221101.

It can be written as a sum of positive squares in 2 ways, for example, as 135868908816 + 875351102404 = 368604^2 + 935602^2 .

It is a super-2 number, since 2×10112200112202 (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011220011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220011223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25280500261 + ... + 25280500300.

It is an arithmetic number, because the mean of its divisors is an integer number (176963501967).

Almost surely, 21011220011220 is an apocalyptic number.

1011220011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011220011220 is an abundant number, since it is smaller than the sum of its proper divisors (1112342012384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011220011220 is a wasteful number, since it uses less digits than its factorization.

1011220011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50561000570 (or 50561000568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1011220011220 its reverse (221100221101), we get a palindrome (1232320232321).

The spelling of 1011220011220 in words is "one trillion, eleven billion, two hundred twenty million, eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 50561000561 101122001122 202244002244 252805002805 505610005610 1011220011220