21233104344 has 64 divisors (see below), whose sum is σ = 59376780000. Its totient is φ = 7030189440.

The previous prime is 21233104337. The next prime is 21233104391. The reversal of 21233104344 is 44340133212.

21233104344 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 310 + 4 + 344 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 297687 + ... + 362054.

Almost surely, 2^21233104344 is an apocalyptic number.

21233104344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21233104344 is an abundant number, since it is smaller than the sum of its proper divisors (38143675656).

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

21233104344 is a wasteful number, since it uses less digits than its factorization.

21233104344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659905 (or 659895 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 21233104344 its reverse (44340133212), we get a palindrome (65573237556).

The spelling of 21233104344 in words is "twenty-one billion, two hundred thirty-three million, one hundred four thousand, three hundred forty-four".