Search a number
-
+
1212200220001 = 19161743394453
BaseRepresentation
bin10001101000111100110…
…000110111010101100001
311021212220022120111112111
4101220330300313111201
5124330041224020001
62324513241355321
7153402310601401
oct21507460672541
94255808514474
101212200220001
11428100470a41
12176b23498b41
138a4050829b4
1442956984801
15217ead0a851
hex11a3cc37561

1212200220001 has 8 divisors (see below), whose sum is σ = 1276011355520. Its totient is φ = 1148390196912.

The previous prime is 1212200219987. The next prime is 1212200220017. The reversal of 1212200220001 is 1000220022121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212200220001 - 27 = 1212200219873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212200220031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2875891 + ... + 3270343.

It is an arithmetic number, because the mean of its divisors is an integer number (159501419440).

Almost surely, 21212200220001 is an apocalyptic number.

It is an amenable number.

1212200220001 is a deficient number, since it is larger than the sum of its proper divisors (63811135519).

1212200220001 is a wasteful number, since it uses less digits than its factorization.

1212200220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556215.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1212200220001 its reverse (1000220022121), we get a palindrome (2212420242122).

The spelling of 1212200220001 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twenty thousand, one".

Divisors: 1 19 161743 394453 3073117 7494607 63800011579 1212200220001