22112573981 has 8 divisors (see below), whose sum is σ = 22551913944. Its totient is φ = 21674053440.

The previous prime is 22112573963. The next prime is 22112574017. The reversal of 22112573981 is 18937521122.

It can be written as a sum of positive squares in 4 ways, for example, as 10533737956 + 11578836025 = 102634^2 + 107605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22112573981 - 2¹⁰ = 22112572957 is a prime.

It is a super-2 number, since 2×22112573981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112573881) 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, 150206 + ... + 258431.

It is an arithmetic number, because the mean of its divisors is an integer number (2818989243).

Almost surely, 2^22112573981 is an apocalyptic number.

It is an amenable number.

22112573981 is a deficient number, since it is larger than the sum of its proper divisors (439339963).

22112573981 is a wasteful number, since it uses less digits than its factorization.

22112573981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409711.

The product of its digits is 60480, while the sum is 41.

The spelling of 22112573981 in words is "twenty-two billion, one hundred twelve million, five hundred seventy-three thousand, nine hundred eighty-one".