100120204530 has 48 divisors (see below), whose sum is σ = 260649469080. Its totient is φ = 26664163584.

The previous prime is 100120204489. The next prime is 100120204543. The reversal of 100120204530 is 35402021001.

100120204530 is a `hidden beast` number, since 10 + 0 + 1 + 202 + 0 + 453 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 40716379089 + 59403825441 = 201783^2 + 243729^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649995 + ... + 789134.

Almost surely, 2^100120204530 is an apocalyptic number.

100120204530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100120204530 is an abundant number, since it is smaller than the sum of its proper divisors (160529264550).

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

100120204530 is a wasteful number, since it uses less digits than its factorization.

100120204530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439915 (or 1439912 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 100120204530 its reverse (35402021001), we get a palindrome (135522225531).

The spelling of 100120204530 in words is "one hundred billion, one hundred twenty million, two hundred four thousand, five hundred thirty".