3331331021 has 4 divisors (see below), whose sum is σ = 3438793344. Its totient is φ = 3223868700.

The previous prime is 3331330979. The next prime is 3331331051. The reversal of 3331331021 is 1201331333.

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.

It is a cyclic number.

It is not a de Polignac number, because 3331331021 - 2¹⁰ = 3331329997 is a prime.

It is a super-2 number, since 2×3331331021² = 22195532742953804882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3331330984 and 3331331002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3331331051) 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, 53731115 + ... + 53731176.

It is an arithmetic number, because the mean of its divisors is an integer number (859698336).

Almost surely, 2^3331331021 is an apocalyptic number.

3331331021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3331331021 is a deficient number, since it is larger than the sum of its proper divisors (107462323).

3331331021 is a wasteful number, since it uses less digits than its factorization.

3331331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107462322.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 3331331021 is about 57717.6837806231. The cubic root of 3331331021 is about 1493.5024165423.

Adding to 3331331021 its reverse (1201331333), we get a palindrome (4532662354).

The spelling of 3331331021 in words is "three billion, three hundred thirty-one million, three hundred thirty-one thousand, twenty-one".