12235566890 has 8 divisors (see below), whose sum is σ = 22024020420. Its totient is φ = 4894226752.

The previous prime is 12235566821. The next prime is 12235566907. The reversal of 12235566890 is 9866553221.

It can be written as a sum of positive squares in 2 ways, for example, as 12132361609 + 103205281 = 110147^2 + 10159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611778335 + ... + 611778354.

Almost surely, 2^12235566890 is an apocalyptic number.

12235566890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12235566890 is a deficient number, since it is larger than the sum of its proper divisors (9788453530).

12235566890 is a wasteful number, since it uses less digits than its factorization.

12235566890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223556696.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 12235566890 in words is "twelve billion, two hundred thirty-five million, five hundred sixty-six thousand, eight hundred ninety".