12261020347250 has 32 divisors (see below), whose sum is σ = 22955674914432. Its totient is φ = 4903757535600.

The previous prime is 12261020347249. The next prime is 12261020347267. The reversal of 12261020347250 is 5274302016221.

It is a self number, because there is not a number n which added to its sum of digits gives 12261020347250.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1362494 + ... + 5135993.

It is an arithmetic number, because the mean of its divisors is an integer number (717364841076).

Almost surely, 2^{12261020347250} is an apocalyptic number.

12261020347250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12261020347250 is a deficient number, since it is larger than the sum of its proper divisors (10694654567182).

12261020347250 is an equidigital number, since it uses as much as digits as its factorization.

12261020347250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6506051 (or 6506041 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 12261020347250 in words is "twelve trillion, two hundred sixty-one billion, twenty million, three hundred forty-seven thousand, two hundred fifty".