22165764212 has 24 divisors (see below), whose sum is σ = 40437852672. Its totient is φ = 10619172000.

The previous prime is 22165764193. The next prime is 22165764241. The reversal of 22165764212 is 21246756122.

It is a super-2 number, since 2×22165764212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 872408 + ... + 897455.

It is an arithmetic number, because the mean of its divisors is an integer number (1684910528).

Almost surely, 2^22165764212 is an apocalyptic number.

It is an amenable number.

22165764212 is a deficient number, since it is larger than the sum of its proper divisors (18272088460).

22165764212 is a wasteful number, since it uses less digits than its factorization.

22165764212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769999 (or 1769997 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The spelling of 22165764212 in words is "twenty-two billion, one hundred sixty-five million, seven hundred sixty-four thousand, two hundred twelve".