22102010021 has 32 divisors (see below), whose sum is σ = 28281657600. Its totient is φ = 17157172032.

The previous prime is 22102010003. The next prime is 22102010059. The reversal of 22102010021 is 12001020122.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22102010021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102009984 and 22102010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102010081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189566 + ... + 283088.

It is an arithmetic number, because the mean of its divisors is an integer number (883801800).

Almost surely, 2^22102010021 is an apocalyptic number.

It is an amenable number.

22102010021 is a deficient number, since it is larger than the sum of its proper divisors (6179647579).

22102010021 is an equidigital number, since it uses as much as digits as its factorization.

22102010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93610 (or 93596 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22102010021 its reverse (12001020122), we get a palindrome (34103030143).

The spelling of 22102010021 in words is "twenty-two billion, one hundred two million, ten thousand, twenty-one".