220100032231 has 4 divisors (see below), whose sum is σ = 220102453872. Its totient is φ = 220097610592.

The previous prime is 220100032193. The next prime is 220100032261. The reversal of 220100032231 is 132230001022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220100032231 - 2⁹ = 220100031719 is a prime.

It is a super-2 number, since 2×220100032231² (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 (220100032261) 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, 1068946 + ... + 1258111.

It is an arithmetic number, because the mean of its divisors is an integer number (55025613468).

Almost surely, 2^220100032231 is an apocalyptic number.

220100032231 is a deficient number, since it is larger than the sum of its proper divisors (2421641).

220100032231 is an equidigital number, since it uses as much as digits as its factorization.

220100032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421640.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 220100032231 its reverse (132230001022), we get a palindrome (352330033253).

The spelling of 220100032231 in words is "two hundred twenty billion, one hundred million, thirty-two thousand, two hundred thirty-one".