100220212231 has 4 divisors (see below), whose sum is σ = 100220866272. Its totient is φ = 100219558192.

The previous prime is 100220212193. The next prime is 100220212237. The reversal of 100220212231 is 132212022001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 100220212231 - 2²¹ = 100218115079 is a prime.

It is a super-2 number, since 2×100220212231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220212237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40530 + ... + 449536.

It is an arithmetic number, because the mean of its divisors is an integer number (25055216568).

Almost surely, 2^100220212231 is an apocalyptic number.

100220212231 is a deficient number, since it is larger than the sum of its proper divisors (654041).

100220212231 is an equidigital number, since it uses as much as digits as its factorization.

100220212231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654040.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 100220212231 its reverse (132212022001), we get a palindrome (232432234232).

The spelling of 100220212231 in words is "one hundred billion, two hundred twenty million, two hundred twelve thousand, two hundred thirty-one".