Search a number
-
+
201111213421 = 1671204258763
BaseRepresentation
bin1011101101001100101…
…0011001010101101101
3201020002210020011202001
42323103022121111231
511243333432312141
6232220023132301
720346503052166
oct2732312312555
9636083204661
10201111213421
11783220452a8
1232b878a4091
1315c705c7b01
149a3b8dc76d
155370cc2a31
hex2ed329956d

201111213421 has 4 divisors (see below), whose sum is σ = 202315472352. Its totient is φ = 199906954492.

The previous prime is 201111213379. The next prime is 201111213431. The reversal of 201111213421 is 124312111102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201111213421 - 27 = 201111213293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111213431) 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, 602129215 + ... + 602129548.

It is an arithmetic number, because the mean of its divisors is an integer number (50578868088).

Almost surely, 2201111213421 is an apocalyptic number.

It is an amenable number.

201111213421 is a deficient number, since it is larger than the sum of its proper divisors (1204258931).

201111213421 is a wasteful number, since it uses less digits than its factorization.

201111213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204258930.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 201111213421 its reverse (124312111102), we get a palindrome (325423324523).

The spelling of 201111213421 in words is "two hundred one billion, one hundred eleven million, two hundred thirteen thousand, four hundred twenty-one".

Divisors: 1 167 1204258763 201111213421