100420521320 has 64 divisors (see below), whose sum is σ = 258615331200. Its totient is φ = 34377742080.

The previous prime is 100420521307. The next prime is 100420521373. The reversal of 100420521320 is 23125024001.

It is a super-2 number, since 2×100420521320² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 100420521292 and 100420521301.

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, 86210 + ... + 456369.

It is an arithmetic number, because the mean of its divisors is an integer number (4040864550).

Almost surely, 2^100420521320 is an apocalyptic number.

100420521320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100420521320 is an abundant number, since it is smaller than the sum of its proper divisors (158194809880).

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

100420521320 is a wasteful number, since it uses less digits than its factorization.

100420521320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543258 (or 543254 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 100420521320 its reverse (23125024001), we get a palindrome (123545545321).

The spelling of 100420521320 in words is "one hundred billion, four hundred twenty million, five hundred twenty-one thousand, three hundred twenty".