21133322431320 has 64 divisors (see below), whose sum is σ = 69163600688640. Its totient is φ = 5123229680000.

The previous prime is 21133322431303. The next prime is 21133322431343. The reversal of 21133322431320 is 2313422333112.

It is a super-2 number, since 2×21133322431320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 8005045056 + ... + 8005047695.

It is an arithmetic number, because the mean of its divisors is an integer number (1080681260760).

Almost surely, 2^{21133322431320} is an apocalyptic number.

21133322431320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21133322431320 is an abundant number, since it is smaller than the sum of its proper divisors (48030278257320).

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

21133322431320 is a wasteful number, since it uses less digits than its factorization.

21133322431320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16010092776 (or 16010092772 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 21133322431320 its reverse (2313422333112), we get a palindrome (23446744764432).

The spelling of 21133322431320 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred twenty-two million, four hundred thirty-one thousand, three hundred twenty".