3199208020921 has 16 divisors (see below), whose sum is σ = 3707224080768. Its totient is φ = 2728488659200.

The previous prime is 3199208020913. The next prime is 3199208020993. The reversal of 3199208020921 is 1290208029913.

It is a cyclic number.

It is not a de Polignac number, because 3199208020921 - 2³ = 3199208020913 is a prime.

It is a super-2 number, since 2×3199208020921² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3199208020901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27446770 + ... + 27563083.

It is an arithmetic number, because the mean of its divisors is an integer number (231701505048).

Almost surely, 2^{3199208020921} is an apocalyptic number.

It is an amenable number.

3199208020921 is a deficient number, since it is larger than the sum of its proper divisors (508016059847).

3199208020921 is a wasteful number, since it uses less digits than its factorization.

3199208020921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55010192.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 3199208020921 in words is "three trillion, one hundred ninety-nine billion, two hundred eight million, twenty thousand, nine hundred twenty-one".