12202578512 has 20 divisors (see below), whose sum is σ = 25033231476. Its totient is φ = 5742389760.

The previous prime is 12202578499. The next prime is 12202578517. The reversal of 12202578512 is 21587520221.

It can be written as a sum of positive squares in 2 ways, for example, as 6720064576 + 5482513936 = 81976^2 + 74044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202578517) 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, 22430939 + ... + 22431482.

Almost surely, 2^12202578512 is an apocalyptic number.

It is an amenable number.

12202578512 is an abundant number, since it is smaller than the sum of its proper divisors (12830652964).

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

12202578512 is a wasteful number, since it uses less digits than its factorization.

12202578512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44862446 (or 44862440 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The spelling of 12202578512 in words is "twelve billion, two hundred two million, five hundred seventy-eight thousand, five hundred twelve".