16221035375 has 8 divisors (see below), whose sum is σ = 20243852304. Its totient is φ = 12976828200.

The previous prime is 16221035321. The next prime is 16221035419. The reversal of 16221035375 is 57353012261.

It is not a de Polignac number, because 16221035375 - 2⁸ = 16221035119 is a prime.

It is a super-3 number, since 3×16221035375³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64884017 + ... + 64884266.

It is an arithmetic number, because the mean of its divisors is an integer number (2530481538).

Almost surely, 2^16221035375 is an apocalyptic number.

16221035375 is a deficient number, since it is larger than the sum of its proper divisors (4022816929).

16221035375 is an equidigital number, since it uses as much as digits as its factorization.

16221035375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129768298 (or 129768288 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 16221035375 in words is "sixteen billion, two hundred twenty-one million, thirty-five thousand, three hundred seventy-five".