12200000010021 has 16 divisors (see below), whose sum is σ = 19137254918400. Its totient is φ = 7654901966784.

The previous prime is 12200000010019. The next prime is 12200000010131. The reversal of 12200000010021 is 12001000000221.

It is not a de Polignac number, because 12200000010021 - 2¹ = 12200000010019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12200000009985 and 12200000010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200000010221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13289759901 + ... + 13289760818.

It is an arithmetic number, because the mean of its divisors is an integer number (1196078432400).

Almost surely, 2^{12200000010021} is an apocalyptic number.

It is an amenable number.

12200000010021 is a deficient number, since it is larger than the sum of its proper divisors (6937254908379).

12200000010021 is a wasteful number, since it uses less digits than its factorization.

12200000010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26579520745 (or 26579520739 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12200000010021 its reverse (12001000000221), we get a palindrome (24201000010242).

The spelling of 12200000010021 in words is "twelve trillion, two hundred billion, ten thousand, twenty-one".