12172258890 has 96 divisors (see below), whose sum is σ = 35458166016. Its totient is φ = 2871089280.

The previous prime is 12172258871. The next prime is 12172258919. The reversal of 12172258890 is 9885227121.

It is a super-3 number, since 3×12172258890³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129522 + ... + 202781.

It is an arithmetic number, because the mean of its divisors is an integer number (369355896).

Almost surely, 2^12172258890 is an apocalyptic number.

12172258890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12172258890 is an abundant number, since it is smaller than the sum of its proper divisors (23285907126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12172258890 is a wasteful number, since it uses less digits than its factorization.

12172258890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332364 (or 332361 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 12172258890 in words is "twelve billion, one hundred seventy-two million, two hundred fifty-eight thousand, eight hundred ninety".