21202150344 has 16 divisors (see below), whose sum is σ = 53005375920. Its totient is φ = 7067383440.

The previous prime is 21202150327. The next prime is 21202150351. The reversal of 21202150344 is 44305120212.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 883422931 = 21202150344 / (2 + 1 + 2 + 0 + 2 + 1 + 5 + 0 + 3 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441711442 + ... + 441711489.

It is an arithmetic number, because the mean of its divisors is an integer number (3312835995).

Almost surely, 2^21202150344 is an apocalyptic number.

21202150344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21202150344 is an abundant number, since it is smaller than the sum of its proper divisors (31803225576).

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

21202150344 is a wasteful number, since it uses less digits than its factorization.

21202150344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883422940 (or 883422936 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21202150344 its reverse (44305120212), we get a palindrome (65507270556).

The spelling of 21202150344 in words is "twenty-one billion, two hundred two million, one hundred fifty thousand, three hundred forty-four".