1210135725700 has 54 divisors (see below), whose sum is σ = 2886423762698. Its totient is φ = 440049350400.

The previous prime is 1210135725679. The next prime is 1210135725709. The reversal of 1210135725700 is 75275310121.

It can be written as a sum of positive squares in 3 ways, for example, as 105614600256 + 1104521125444 = 324984^2 + 1050962^2 .

It is not an unprimeable number, because it can be changed into a prime (1210135725709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49993509 + ... + 50017708.

Almost surely, 2^{1210135725700} is an apocalyptic number.

1210135725700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210135725700 is an abundant number, since it is smaller than the sum of its proper divisors (1676288036998).

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

1210135725700 is a wasteful number, since it uses less digits than its factorization.

1210135725700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100011253 (or 100011235 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 34.

The spelling of 1210135725700 in words is "one trillion, two hundred ten billion, one hundred thirty-five million, seven hundred twenty-five thousand, seven hundred".