3331656121 has 8 divisors (see below), whose sum is σ = 3344345984. Its totient is φ = 3318991200.

The previous prime is 3331656109. The next prime is 3331656127. The reversal of 3331656121 is 1216561333.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3331656121 - 2²⁷ = 3197438393 is a prime.

It is a super-2 number, since 2×3331656121² = 22199865017193533282, which contains 22 as substring.

It is the 57721-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3331656127) by changing a digit.

It is a nontrivial repunit in base 57720.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286996 + ... + 298378.

It is an arithmetic number, because the mean of its divisors is an integer number (418043248).

Almost surely, 2^3331656121 is an apocalyptic number.

It is an amenable number.

3331656121 is a deficient number, since it is larger than the sum of its proper divisors (12689863).

3331656121 is a wasteful number, since it uses less digits than its factorization.

3331656121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12471.

The product of its digits is 9720, while the sum is 31.

The square root of 3331656121 is about 57720.5000064968. The cubic root of 3331656121 is about 1493.5509979090.

The spelling of 3331656121 in words is "three billion, three hundred thirty-one million, six hundred fifty-six thousand, one hundred twenty-one".