22212151985 has 16 divisors (see below), whose sum is σ = 26738197200. Its totient is φ = 17714036736.

The previous prime is 22212151967. The next prime is 22212151991. The reversal of 22212151985 is 58915121222.

It can be written as a sum of positive squares in 8 ways, for example, as 1655187856 + 20556964129 = 40684^2 + 143377^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212151985 - 2⁶ = 22212151921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5176721 + ... + 5181009.

It is an arithmetic number, because the mean of its divisors is an integer number (1671137325).

Almost surely, 2^22212151985 is an apocalyptic number.

It is an amenable number.

22212151985 is a deficient number, since it is larger than the sum of its proper divisors (4526045215).

22212151985 is a wasteful number, since it uses less digits than its factorization.

22212151985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7300.

The product of its digits is 28800, while the sum is 38.

The spelling of 22212151985 in words is "twenty-two billion, two hundred twelve million, one hundred fifty-one thousand, nine hundred eighty-five".