221012019982 has 24 divisors (see below), whose sum is σ = 376798901976. Its totient is φ = 96636830544.

The previous prime is 221012019967. The next prime is 221012020007. The reversal of 221012019982 is 289910210122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11764108 + ... + 11782879.

It is an arithmetic number, because the mean of its divisors is an integer number (15699954249).

Almost surely, 2^221012019982 is an apocalyptic number.

221012019982 is a deficient number, since it is larger than the sum of its proper divisors (155786881994).

221012019982 is a wasteful number, since it uses less digits than its factorization.

221012019982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23547040 (or 23547021 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 221012019982 in words is "two hundred twenty-one billion, twelve million, nineteen thousand, nine hundred eighty-two".