31100122222122 has 32 divisors (see below), whose sum is σ = 62228496540672. Its totient is φ = 10361999533424.

The previous prime is 31100122222121. The next prime is 31100122222123. The reversal of 31100122222122 is 22122222100113.

It is an interprime number because it is at equal distance from previous prime (31100122222121) and next prime (31100122222123).

It is not an unprimeable number, because it can be changed into a prime (31100122222121) 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 15 ways as a sum of consecutive naturals, for example, 163635553 + ... + 163825499.

It is an arithmetic number, because the mean of its divisors is an integer number (1944640516896).

Almost surely, 2^{31100122222122} is an apocalyptic number.

31100122222122 is an abundant number, since it is smaller than the sum of its proper divisors (31128374318550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31100122222122 is a wasteful number, since it uses less digits than its factorization.

31100122222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202202.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 31100122222122 its reverse (22122222100113), we get a palindrome (53222344322235).

The spelling of 31100122222122 in words is "thirty-one trillion, one hundred billion, one hundred twenty-two million, two hundred twenty-two thousand, one hundred twenty-two".