221111220008 has 32 divisors (see below), whose sum is σ = 498747115200. Its totient is φ = 89774479872.

The previous prime is 221111219971. The next prime is 221111220013. The reversal of 221111220008 is 800022111122.

It is a super-2 number, since 2×221111220008² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103904585 + ... + 103906712.

It is an arithmetic number, because the mean of its divisors is an integer number (15585847350).

Almost surely, 2^221111220008 is an apocalyptic number.

221111220008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

221111220008 is an abundant number, since it is smaller than the sum of its proper divisors (277635895192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221111220008 is a wasteful number, since it uses less digits than its factorization.

221111220008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207811329 (or 207811325 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 221111220008 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, eight".