31122104421101 has 4 divisors (see below), whose sum is σ = 31236946135104. Its totient is φ = 31007262707100.

The previous prime is 31122104421061. The next prime is 31122104421103. The reversal of 31122104421101 is 10112440122113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31122104421101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122104421103) 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, 57420856595 + ... + 57420857136.

It is an arithmetic number, because the mean of its divisors is an integer number (7809236533776).

Almost surely, 2^{31122104421101} is an apocalyptic number.

It is an amenable number.

31122104421101 is a deficient number, since it is larger than the sum of its proper divisors (114841714003).

31122104421101 is a wasteful number, since it uses less digits than its factorization.

31122104421101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114841714002.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 31122104421101 its reverse (10112440122113), we get a palindrome (41234544543214).

The spelling of 31122104421101 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred four million, four hundred twenty-one thousand, one hundred one".