21154533325100 has 54 divisors (see below), whose sum is σ = 53400086277300. Its totient is φ = 7252982852640.

The previous prime is 21154533325091. The next prime is 21154533325111. The reversal of 21154533325100 is 152333545112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2158620950 + ... + 2158630749.

Almost surely, 2^{21154533325100} is an apocalyptic number.

21154533325100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21154533325100 is an abundant number, since it is smaller than the sum of its proper divisors (32245552952200).

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

21154533325100 is a wasteful number, since it uses less digits than its factorization.

21154533325100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317251727 (or 4317251713 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 21154533325100 in words is "twenty-one trillion, one hundred fifty-four billion, five hundred thirty-three million, three hundred twenty-five thousand, one hundred".