22021121011164 has 48 divisors (see below), whose sum is σ = 56055146923776. Its totient is φ = 6672902169600.

The previous prime is 22021121011163. The next prime is 22021121011237. The reversal of 22021121011164 is 46111012112022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021121011163) 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, 3358809 + ... + 7437999.

It is an arithmetic number, because the mean of its divisors is an integer number (1167815560912).

Almost surely, 2^{22021121011164} is an apocalyptic number.

It is an amenable number.

22021121011164 is an abundant number, since it is smaller than the sum of its proper divisors (34034025912612).

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

22021121011164 is a wasteful number, since it uses less digits than its factorization.

22021121011164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120106 (or 4120104 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 22021121011164 its reverse (46111012112022), we get a palindrome (68132133123186).

The spelling of 22021121011164 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-one million, eleven thousand, one hundred sixty-four".