31122101220022 has 4 divisors (see below), whose sum is σ = 46683151830036. Its totient is φ = 15561050610010.

The previous prime is 31122101219879. The next prime is 31122101220043. The reversal of 31122101220022 is 22002210122113.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7780525305004 + ... + 7780525305007.

It is an arithmetic number, because the mean of its divisors is an integer number (11670787957509).

Almost surely, 2^{31122101220022} is an apocalyptic number.

31122101220022 is a deficient number, since it is larger than the sum of its proper divisors (15561050610014).

31122101220022 is a wasteful number, since it uses less digits than its factorization.

31122101220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15561050610013.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31122101220022 its reverse (22002210122113), we get a palindrome (53124311342135).

The spelling of 31122101220022 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty thousand, twenty-two".