21182442292 has 24 divisors (see below), whose sum is σ = 40615817760. Its totient is φ = 9586332960.

The previous prime is 21182442283. The next prime is 21182442331. The reversal of 21182442292 is 29224428112.

It is a super-2 number, since 2×21182442292² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 1041058 + ... + 1061209.

It is an arithmetic number, because the mean of its divisors is an integer number (1692325740).

Almost surely, 2^21182442292 is an apocalyptic number.

21182442292 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21182442292 is a deficient number, since it is larger than the sum of its proper divisors (19433375468).

21182442292 is a wasteful number, since it uses less digits than its factorization.

21182442292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2102511 (or 2102509 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The spelling of 21182442292 in words is "twenty-one billion, one hundred eighty-two million, four hundred forty-two thousand, two hundred ninety-two".