21142588242052 has 48 divisors (see below), whose sum is σ = 38426684409792. Its totient is φ = 10173169884800.

The previous prime is 21142588242023. The next prime is 21142588242071. The reversal of 21142588242052 is 25024288524112.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 21142588241993 and 21142588242011.

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, 2323018 + ... + 6905185.

It is an arithmetic number, because the mean of its divisors is an integer number (800555925204).

Almost surely, 2^{21142588242052} is an apocalyptic number.

It is an amenable number.

21142588242052 is a deficient number, since it is larger than the sum of its proper divisors (17284096167740).

21142588242052 is a wasteful number, since it uses less digits than its factorization.

21142588242052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9228468 (or 9228466 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 46.

The spelling of 21142588242052 in words is "twenty-one trillion, one hundred forty-two billion, five hundred eighty-eight million, two hundred forty-two thousand, fifty-two".