12261589228 has 12 divisors (see below), whose sum is σ = 24523178512. Its totient is φ = 5254966800.

The previous prime is 12261589217. The next prime is 12261589229. The reversal of 12261589228 is 82298516221.

12261589228 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12261589229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218956923 + ... + 218956978.

Almost surely, 2^12261589228 is an apocalyptic number.

It is an amenable number.

12261589228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12261589228 is a wasteful number, since it uses less digits than its factorization.

12261589228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437913912 (or 437913910 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The spelling of 12261589228 in words is "twelve billion, two hundred sixty-one million, five hundred eighty-nine thousand, two hundred twenty-eight".