329899845221 has 16 divisors (see below), whose sum is σ = 357187061760. Its totient is φ = 304020138240.

The previous prime is 329899845211. The next prime is 329899845227. The reversal of 329899845221 is 122548998923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-329899845221 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329899845227) 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, 3005876 + ... + 3113693.

It is an arithmetic number, because the mean of its divisors is an integer number (22324191360).

Almost surely, 2^329899845221 is an apocalyptic number.

329899845221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

329899845221 is a deficient number, since it is larger than the sum of its proper divisors (27287216539).

329899845221 is a wasteful number, since it uses less digits than its factorization.

329899845221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6119684.

The product of its digits is 22394880, while the sum is 62.

The spelling of 329899845221 in words is "three hundred twenty-nine billion, eight hundred ninety-nine million, eight hundred forty-five thousand, two hundred twenty-one".