100202243421 has 32 divisors (see below), whose sum is σ = 163101627648. Its totient is φ = 53413355520.

The previous prime is 100202243399. The next prime is 100202243459. The reversal of 100202243421 is 124342202001.

It is not a de Polignac number, because 100202243421 - 2¹⁷ = 100202112349 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202243021) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1201600 + ... + 1282281.

It is an arithmetic number, because the mean of its divisors is an integer number (5096925864).

Almost surely, 2^100202243421 is an apocalyptic number.

It is an amenable number.

100202243421 is a deficient number, since it is larger than the sum of its proper divisors (62899384227).

100202243421 is a wasteful number, since it uses less digits than its factorization.

100202243421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484021.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 100202243421 its reverse (124342202001), we get a palindrome (224544445422).

The spelling of 100202243421 in words is "one hundred billion, two hundred two million, two hundred forty-three thousand, four hundred twenty-one".