10121564236 has 12 divisors (see below), whose sum is σ = 20243128528. Its totient is φ = 4337813232.

The previous prime is 10121564209. The next prime is 10121564239. The reversal of 10121564236 is 63246512101.

It is a happy number.

10121564236 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 10121564198 and 10121564207.

It is not an unprimeable number, because it can be changed into a prime (10121564239) 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, 180742191 + ... + 180742246.

Almost surely, 2^10121564236 is an apocalyptic number.

It is an amenable number.

10121564236 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.

10121564236 is a wasteful number, since it uses less digits than its factorization.

10121564236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361484448 (or 361484446 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 10121564236 in words is "ten billion, one hundred twenty-one million, five hundred sixty-four thousand, two hundred thirty-six".