22120100001012 has 48 divisors (see below), whose sum is σ = 56021509117952. Its totient is φ = 6752592604800.

The previous prime is 22120100000963. The next prime is 22120100001019. The reversal of 22120100001012 is 21010000102122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120100001019) 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, 558230239 + ... + 558269862.

Almost surely, 2^{22120100001012} is an apocalyptic number.

It is an amenable number.

22120100001012 is an abundant number, since it is smaller than the sum of its proper divisors (33901409116940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22120100001012 is a wasteful number, since it uses less digits than its factorization.

22120100001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116500248 (or 1116500246 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22120100001012 its reverse (21010000102122), we get a palindrome (43130100103134).

The spelling of 22120100001012 in words is "twenty-two trillion, one hundred twenty billion, one hundred million, one thousand, twelve".