3121022133 has 6 divisors (see below), whose sum is σ = 4508143094. Its totient is φ = 2080681416.

The previous prime is 3121022033. The next prime is 3121022147. The reversal of 3121022133 is 3312201213.

It can be written as a sum of positive squares in only one way, i.e., 2478247524 + 642774609 = 49782^2 + 25353^2 .

It is not a de Polignac number, because 3121022133 - 2²² = 3116827829 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 (3121022033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173390110 + ... + 173390127.

Almost surely, 2^3121022133 is an apocalyptic number.

It is an amenable number.

3121022133 is a deficient number, since it is larger than the sum of its proper divisors (1387120961).

3121022133 is a wasteful number, since it uses less digits than its factorization.

3121022133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346780243 (or 346780240 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3121022133 is about 55866.1089838911. The cubic root of 3121022133 is about 1461.3882668444.

Adding to 3121022133 its reverse (3312201213), we get a palindrome (6433223346).

The spelling of 3121022133 in words is "three billion, one hundred twenty-one million, twenty-two thousand, one hundred thirty-three".