21103122022320 has 640 divisors, whose sum is σ = 74904221822976. Its totient is φ = 4868915724288.

The previous prime is 21103122022291. The next prime is 21103122022393. The reversal of 21103122022320 is 2322022130112.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23791568917 + ... + 23791569803.

Almost surely, 2^{21103122022320} is an apocalyptic number.

21103122022320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21103122022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37452110911488).

21103122022320 is an abundant number, since it is smaller than the sum of its proper divisors (53801099800656).

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

21103122022320 is a wasteful number, since it uses less digits than its factorization.

21103122022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277 (or 2271 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21103122022320 its reverse (2322022130112), we get a palindrome (23425144152432).

The spelling of 21103122022320 in words is "twenty-one trillion, one hundred three billion, one hundred twenty-two million, twenty-two thousand, three hundred twenty".