3131021221022 has 16 divisors (see below), whose sum is σ = 4724793787392. Its totient is φ = 1556090510520.

The previous prime is 3131021220973. The next prime is 3131021221037. The reversal of 3131021221022 is 2201221201313.

It is a junction number, because it is equal to n+sod(n) for n = 3131021220985 and 3131021221003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13142747 + ... + 13378857.

It is an arithmetic number, because the mean of its divisors is an integer number (295299611712).

Almost surely, 2^{3131021221022} is an apocalyptic number.

3131021221022 is a deficient number, since it is larger than the sum of its proper divisors (1593772566370).

3131021221022 is a wasteful number, since it uses less digits than its factorization.

3131021221022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275983.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3131021221022 its reverse (2201221201313), we get a palindrome (5332242422335).

The spelling of 3131021221022 in words is "three trillion, one hundred thirty-one billion, twenty-one million, two hundred twenty-one thousand, twenty-two".