10851221375 has 16 divisors (see below), whose sum is σ = 13764339264. Its totient is φ = 8538660000.

The previous prime is 10851221371. The next prime is 10851221377. The reversal of 10851221375 is 57312215801.

It is not a de Polignac number, because 10851221375 - 2² = 10851221371 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10851221371) 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, 703931 + ... + 719180.

It is an arithmetic number, because the mean of its divisors is an integer number (860271204).

Almost surely, 2^10851221375 is an apocalyptic number.

10851221375 is a deficient number, since it is larger than the sum of its proper divisors (2913117889).

10851221375 is an equidigital number, since it uses as much as digits as its factorization.

10851221375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423187 (or 1423177 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 10851221375 in words is "ten billion, eight hundred fifty-one million, two hundred twenty-one thousand, three hundred seventy-five".