3123203221999 has 4 divisors (see below), whose sum is σ = 3569375110864. Its totient is φ = 2677031333136.

The previous prime is 3123203221991. The next prime is 3123203222039. The reversal of 3123203221999 is 9991223023213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3123203221999 - 2³ = 3123203221991 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 (3123203221991) 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, 223085944422 + ... + 223085944435.

It is an arithmetic number, because the mean of its divisors is an integer number (892343777716).

Almost surely, 2^{3123203221999} is an apocalyptic number.

3123203221999 is a deficient number, since it is larger than the sum of its proper divisors (446171888865).

3123203221999 is an equidigital number, since it uses as much as digits as its factorization.

3123203221999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446171888864.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 3123203221999 in words is "three trillion, one hundred twenty-three billion, two hundred three million, two hundred twenty-one thousand, nine hundred ninety-nine".