22012120121012 has 48 divisors (see below), whose sum is σ = 46625608189440. Its totient is φ = 8882421977952.

The previous prime is 22012120121011. The next prime is 22012120121023. The reversal of 22012120121012 is 21012102121022.

It is a super-2 number, since 2×22012120121012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012120121011) 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, 126834038 + ... + 127007469.

It is an arithmetic number, because the mean of its divisors is an integer number (971366837280).

Almost surely, 2^{22012120121012} is an apocalyptic number.

It is an amenable number.

22012120121012 is an abundant number, since it is smaller than the sum of its proper divisors (24613488068428).

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

22012120121012 is a wasteful number, since it uses less digits than its factorization.

22012120121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253841700 (or 253841698 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22012120121012 its reverse (21012102121022), we get a palindrome (43024222242034).

The spelling of 22012120121012 in words is "twenty-two trillion, twelve billion, one hundred twenty million, one hundred twenty-one thousand, twelve".