100454235021 has 30 divisors (see below), whose sum is σ = 174561069870. Its totient is φ = 57402417744.

The previous prime is 100454234977. The next prime is 100454235029. The reversal of 100454235021 is 120532454001.

100454235021 is a `hidden beast` number, since 100 + 4 + 54 + 2 + 3 + 502 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 52443290025 + 48010944996 = 229005^2 + 219114^2 .

It is not a de Polignac number, because 100454235021 - 2²⁷ = 100320017293 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100454235029) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 12650886 + ... + 12658823.

It is an arithmetic number, because the mean of its divisors is an integer number (5818702329).

Almost surely, 2^100454235021 is an apocalyptic number.

It is an amenable number.

100454235021 is a deficient number, since it is larger than the sum of its proper divisors (74106834849).

100454235021 is an equidigital number, since it uses as much as digits as its factorization.

100454235021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25309735 (or 25309719 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 100454235021 its reverse (120532454001), we get a palindrome (220986689022).

The spelling of 100454235021 in words is "one hundred billion, four hundred fifty-four million, two hundred thirty-five thousand, twenty-one".