220031135205 has 64 divisors (see below), whose sum is σ = 424158363648. Its totient is φ = 95269812480.

The previous prime is 220031135179. The next prime is 220031135227. The reversal of 220031135205 is 502531130022.

It is a happy number.

It is not a de Polignac number, because 220031135205 - 2⁸ = 220031134949 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 566142 + ... + 872111.

It is an arithmetic number, because the mean of its divisors is an integer number (6627474432).

Almost surely, 2^220031135205 is an apocalyptic number.

It is an amenable number.

220031135205 is a deficient number, since it is larger than the sum of its proper divisors (204127228443).

220031135205 is a wasteful number, since it uses less digits than its factorization.

220031135205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438346.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 220031135205 its reverse (502531130022), we get a palindrome (722562265227).

The spelling of 220031135205 in words is "two hundred twenty billion, thirty-one million, one hundred thirty-five thousand, two hundred five".