3121011221022 has 32 divisors (see below), whose sum is σ = 6936053648160. Its totient is φ = 1040266100160.

The previous prime is 3121011221017. The next prime is 3121011221039. The reversal of 3121011221022 is 2201221101213.

3121011221022 is a `hidden beast` number, since 312 + 10 + 112 + 210 + 22 = 666.

It is a super-2 number, since 2×3121011221022² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3121011220986 and 3121011221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1169629 + ... + 2758632.

It is an arithmetic number, because the mean of its divisors is an integer number (216751676505).

Almost surely, 2^{3121011221022} is an apocalyptic number.

3121011221022 is an abundant number, since it is smaller than the sum of its proper divisors (3815042427138).

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

3121011221022 is a wasteful number, since it uses less digits than its factorization.

3121011221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942985 (or 3942979 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 3121011221022 its reverse (2201221101213), we get a palindrome (5322232322235).

The spelling of 3121011221022 in words is "three trillion, one hundred twenty-one billion, eleven million, two hundred twenty-one thousand, twenty-two".