31122021022 has 32 divisors (see below), whose sum is σ = 48778848000. Its totient is φ = 14875392000.

The previous prime is 31122021019. The next prime is 31122021037. The reversal of 31122021022 is 22012022113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31122020987 and 31122021005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2806104 + ... + 2817172.

It is an arithmetic number, because the mean of its divisors is an integer number (1524339000).

Almost surely, 2^31122021022 is an apocalyptic number.

31122021022 is a deficient number, since it is larger than the sum of its proper divisors (17656826978).

31122021022 is a wasteful number, since it uses less digits than its factorization.

31122021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11652.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31122021022 its reverse (22012022113), we get a palindrome (53134043135).

The spelling of 31122021022 in words is "thirty-one billion, one hundred twenty-two million, twenty-one thousand, twenty-two".