22181196556 has 72 divisors (see below), whose sum is σ = 42350076720. Its totient is φ = 10128681984.

The previous prime is 22181196509. The next prime is 22181196571. The reversal of 22181196556 is 65569118122.

It is a super-2 number, since 2×22181196556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19646200 + ... + 19647328.

It is an arithmetic number, because the mean of its divisors is an integer number (588195510).

Almost surely, 2^22181196556 is an apocalyptic number.

It is an amenable number.

22181196556 is a deficient number, since it is larger than the sum of its proper divisors (20168880164).

22181196556 is a wasteful number, since it uses less digits than its factorization.

22181196556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1290 counting only the distinct ones).

The product of its digits is 259200, while the sum is 46.

The spelling of 22181196556 in words is "twenty-two billion, one hundred eighty-one million, one hundred ninety-six thousand, five hundred fifty-six".