21200334344 has 32 divisors (see below), whose sum is σ = 45437880000. Its totient is φ = 9084139200.

The previous prime is 21200334307. The next prime is 21200334361. The reversal of 21200334344 is 44343300212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289019 + ... + 354869.

It is an arithmetic number, because the mean of its divisors is an integer number (1419933750).

Almost surely, 2^21200334344 is an apocalyptic number.

It is an amenable number.

21200334344 is an abundant number, since it is smaller than the sum of its proper divisors (24237545656).

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

21200334344 is a wasteful number, since it uses less digits than its factorization.

21200334344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71613 (or 71609 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 21200334344 its reverse (44343300212), we get a palindrome (65543634556).

The spelling of 21200334344 in words is "twenty-one billion, two hundred million, three hundred thirty-four thousand, three hundred forty-four".