221451451204 has 24 divisors (see below), whose sum is σ = 400413440448. Its totient is φ = 107106461280.

The previous prime is 221451451171. The next prime is 221451451211. The reversal of 221451451204 is 402154154122.

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, 7341162 + ... + 7371265.

It is an arithmetic number, because the mean of its divisors is an integer number (16683893352).

Almost surely, 2^221451451204 is an apocalyptic number.

It is an amenable number.

221451451204 is a deficient number, since it is larger than the sum of its proper divisors (178961989244).

221451451204 is a wasteful number, since it uses less digits than its factorization.

221451451204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14712555 (or 14712553 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 31.

The spelling of 221451451204 in words is "two hundred twenty-one billion, four hundred fifty-one million, four hundred fifty-one thousand, two hundred four".