22017211665212 has 24 divisors (see below), whose sum is σ = 38556343060704. Its totient is φ = 11001116198912.

The previous prime is 22017211665209. The next prime is 22017211665217. The reversal of 22017211665212 is 21256611271022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22017211665217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34529873 + ... + 35161719.

It is an arithmetic number, because the mean of its divisors is an integer number (1606514294196).

Almost surely, 2^{22017211665212} is an apocalyptic number.

It is an amenable number.

22017211665212 is a deficient number, since it is larger than the sum of its proper divisors (16539131395492).

22017211665212 is a wasteful number, since it uses less digits than its factorization.

22017211665212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637765 (or 637763 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 22017211665212 in words is "twenty-two trillion, seventeen billion, two hundred eleven million, six hundred sixty-five thousand, two hundred twelve".