21112502202 has 32 divisors (see below), whose sum is σ = 51181824960. Its totient is φ = 6397727760.

The previous prime is 21112502183. The next prime is 21112502221. The reversal of 21112502202 is 20220521112.

21112502202 is a `hidden beast` number, since 211 + 1 + 250 + 2 + 202 = 666.

It is an interprime number because it is at equal distance from previous prime (21112502183) and next prime (21112502221).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17770873 + ... + 17772060.

It is an arithmetic number, because the mean of its divisors is an integer number (1599432030).

Almost surely, 2^21112502202 is an apocalyptic number.

21112502202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21112502202 is an abundant number, since it is smaller than the sum of its proper divisors (30069322758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21112502202 is a wasteful number, since it uses less digits than its factorization.

21112502202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35542955 (or 35542949 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The spelling of 21112502202 in words is "twenty-one billion, one hundred twelve million, five hundred two thousand, two hundred two".