221677052 has 12 divisors (see below), whose sum is σ = 393399216. Its totient is φ = 109277280.

The previous prime is 221677033. The next prime is 221677067. The reversal of 221677052 is 250776122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389993 + ... + 390560.

It is an arithmetic number, because the mean of its divisors is an integer number (32783268).

Almost surely, 2^221677052 is an apocalyptic number.

It is an amenable number.

221677052 is a deficient number, since it is larger than the sum of its proper divisors (171722164).

221677052 is a wasteful number, since it uses less digits than its factorization.

221677052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780628 (or 780626 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 221677052 is about 14888.8230562392. The cubic root of 221677052 is about 605.2111386551.

The spelling of 221677052 in words is "two hundred twenty-one million, six hundred seventy-seven thousand, fifty-two".