220103122031 has 4 divisors (see below), whose sum is σ = 237034131432. Its totient is φ = 203172112632.

The previous prime is 220103122021. The next prime is 220103122049. The reversal of 220103122031 is 130221301022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220103122031 is a prime.

It is a super-2 number, since 2×220103122031² (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 (220103122021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8465504681 + ... + 8465504706.

It is an arithmetic number, because the mean of its divisors is an integer number (59258532858).

Almost surely, 2^220103122031 is an apocalyptic number.

220103122031 is a deficient number, since it is larger than the sum of its proper divisors (16931009401).

220103122031 is a wasteful number, since it uses less digits than its factorization.

220103122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16931009400.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 220103122031 its reverse (130221301022), we get a palindrome (350324423053).

The spelling of 220103122031 in words is "two hundred twenty billion, one hundred three million, one hundred twenty-two thousand, thirty-one".