221275027892 has 24 divisors (see below), whose sum is σ = 389845747200. Its totient is φ = 109891764576.

The previous prime is 221275027879. The next prime is 221275027903. The reversal of 221275027892 is 298720572122.

It is a congruent number.

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, 565109 + ... + 872867.

It is an arithmetic number, because the mean of its divisors is an integer number (16243572800).

Almost surely, 2^221275027892 is an apocalyptic number.

It is an amenable number.

221275027892 is a deficient number, since it is larger than the sum of its proper divisors (168570719308).

221275027892 is a wasteful number, since it uses less digits than its factorization.

221275027892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308975 (or 308973 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 221275027892 in words is "two hundred twenty-one billion, two hundred seventy-five million, twenty-seven thousand, eight hundred ninety-two".