21101183748392 has 64 divisors (see below), whose sum is σ = 43301993169600. Its totient is φ = 9560279715840.

The previous prime is 21101183748391. The next prime is 21101183748409. The reversal of 21101183748392 is 29384738110112.

It is a self number, because there is not a number n which added to its sum of digits gives 21101183748392.

It is not an unprimeable number, because it can be changed into a prime (21101183748391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33146078 + ... + 33776690.

It is an arithmetic number, because the mean of its divisors is an integer number (676593643275).

Almost surely, 2^{21101183748392} is an apocalyptic number.

21101183748392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21101183748392 is an abundant number, since it is smaller than the sum of its proper divisors (22200809421208).

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

21101183748392 is a wasteful number, since it uses less digits than its factorization.

21101183748392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631866 (or 631862 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 21101183748392 in words is "twenty-one trillion, one hundred one billion, one hundred eighty-three million, seven hundred forty-eight thousand, three hundred ninety-two".