21323550501100 has 36 divisors (see below), whose sum is σ = 46283769704704. Its totient is φ = 8527269948480.

The previous prime is 21323550501061. The next prime is 21323550501107. The reversal of 21323550501100 is 110505532312.

It is a super-2 number, since 2×21323550501100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21323550501107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26479467 + ... + 27272866.

Almost surely, 2^{21323550501100} is an apocalyptic number.

21323550501100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21323550501100 is an abundant number, since it is smaller than the sum of its proper divisors (24960219203604).

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

21323550501100 is a wasteful number, since it uses less digits than its factorization.

21323550501100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53756314 (or 53756307 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 21323550501100 in words is "twenty-one trillion, three hundred twenty-three billion, five hundred fifty million, five hundred one thousand, one hundred".