3113120021 has 4 divisors (see below), whose sum is σ = 3396130944. Its totient is φ = 2830109100.

The previous prime is 3113119993. The next prime is 3113120041. The reversal of 3113120021 is 1200213113.

3113120021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1200213113 = 11 ⋅109110283.

It is a cyclic number.

It is not a de Polignac number, because 3113120021 - 2⁶ = 3113119957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3113119978 and 3113120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3113120041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141505445 + ... + 141505466.

It is an arithmetic number, because the mean of its divisors is an integer number (849032736).

Almost surely, 2^3113120021 is an apocalyptic number.

It is an amenable number.

3113120021 is a deficient number, since it is larger than the sum of its proper divisors (283010923).

3113120021 is a wasteful number, since it uses less digits than its factorization.

3113120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283010922.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 3113120021 is about 55795.3404954213. The cubic root of 3113120021 is about 1460.1538620920.

Adding to 3113120021 its reverse (1200213113), we get a palindrome (4313333134).

The spelling of 3113120021 in words is "three billion, one hundred thirteen million, one hundred twenty thousand, twenty-one".