22012321101012 has 72 divisors (see below), whose sum is σ = 61431976176480. Its totient is φ = 6590034054720.

The previous prime is 22012321100999. The next prime is 22012321101013. The reversal of 22012321101012 is 21010112321022.

22012321101012 is a `hidden beast` number, since 220 + 1 + 232 + 110 + 101 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012321101013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334826587 + ... + 334892322.

It is an arithmetic number, because the mean of its divisors is an integer number (853221891340).

Almost surely, 2^{22012321101012} is an apocalyptic number.

22012321101012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22012321101012 is an abundant number, since it is smaller than the sum of its proper divisors (39419655075468).

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

22012321101012 is a wasteful number, since it uses less digits than its factorization.

22012321101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669719013 (or 669719008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22012321101012 its reverse (21010112321022), we get a palindrome (43022433422034).

The spelling of 22012321101012 in words is "twenty-two trillion, twelve billion, three hundred twenty-one million, one hundred one thousand, twelve".