22561522002212 has 6 divisors (see below), whose sum is σ = 39482663503878. Its totient is φ = 11280761001104.

The previous prime is 22561522002203. The next prime is 22561522002259. The reversal of 22561522002212 is 21220022516522.

It can be written as a sum of positive squares in only one way, i.e., 12920099558116 + 9641422444096 = 3594454^2 + 3105064^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2820190250273 + ... + 2820190250280.

It is an arithmetic number, because the mean of its divisors is an integer number (6580443917313).

Almost surely, 2^{22561522002212} is an apocalyptic number.

It is an amenable number.

22561522002212 is a deficient number, since it is larger than the sum of its proper divisors (16921141501666).

22561522002212 is a wasteful number, since it uses less digits than its factorization.

22561522002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640380500557 (or 5640380500555 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 22561522002212 its reverse (21220022516522), we get a palindrome (43781544518734).

The spelling of 22561522002212 in words is "twenty-two trillion, five hundred sixty-one billion, five hundred twenty-two million, two thousand, two hundred twelve".