22012102156 has 24 divisors (see below), whose sum is σ = 42026950224. Its totient is φ = 10004585280.

The previous prime is 22012102111. The next prime is 22012102157. The reversal of 22012102156 is 65120121022.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (22012102157) 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, 778686 + ... + 806458.

It is an arithmetic number, because the mean of its divisors is an integer number (1751122926).

Almost surely, 2^22012102156 is an apocalyptic number.

It is an amenable number.

22012102156 is a deficient number, since it is larger than the sum of its proper divisors (20014848068).

22012102156 is a wasteful number, since it uses less digits than its factorization.

22012102156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45801 (or 45799 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 22012102156 its reverse (65120121022), we get a palindrome (87132223178).

The spelling of 22012102156 in words is "twenty-two billion, twelve million, one hundred two thousand, one hundred fifty-six".