21125404741182 has 64 divisors (see below), whose sum is σ = 48612067660800. Its totient is φ = 5995217942784.

The previous prime is 21125404741141. The next prime is 21125404741237. The reversal of 21125404741182 is 28114740452112.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6236223 + ... + 9007845.

It is an arithmetic number, because the mean of its divisors is an integer number (759563557200).

Almost surely, 2^{21125404741182} is an apocalyptic number.

21125404741182 is an abundant number, since it is smaller than the sum of its proper divisors (27486662919618).

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

21125404741182 is a wasteful number, since it uses less digits than its factorization.

21125404741182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772857.

The product of its (nonzero) digits is 143360, while the sum is 42.

The spelling of 21125404741182 in words is "twenty-one trillion, one hundred twenty-five billion, four hundred four million, seven hundred forty-one thousand, one hundred eighty-two".