22225661012 has 6 divisors (see below), whose sum is σ = 38894906778. Its totient is φ = 11112830504.

The previous prime is 22225660973. The next prime is 22225661041. The reversal of 22225661012 is 21016652222.

It can be written as a sum of positive squares in only one way, i.e., 18981675076 + 3243985936 = 137774^2 + 56956^2 .

It is a super-4 number, since 4×22225661012⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778207623 + ... + 2778207630.

It is an arithmetic number, because the mean of its divisors is an integer number (6482484463).

Almost surely, 2^22225661012 is an apocalyptic number.

It is an amenable number.

22225661012 is a deficient number, since it is larger than the sum of its proper divisors (16669245766).

22225661012 is a wasteful number, since it uses less digits than its factorization.

22225661012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556415257 (or 5556415255 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 22225661012 in words is "twenty-two billion, two hundred twenty-five million, six hundred sixty-one thousand, twelve".