1251210112130 has 64 divisors (see below), whose sum is σ = 2476275753600. Its totient is φ = 451403097600.

The previous prime is 1251210112123. The next prime is 1251210112153. The reversal of 1251210112130 is 312110121521.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81509696 + ... + 81525044.

It is an arithmetic number, because the mean of its divisors is an integer number (38691808650).

Almost surely, 2^{1251210112130} is an apocalyptic number.

1251210112130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1251210112130 is a deficient number, since it is larger than the sum of its proper divisors (1225065641470).

1251210112130 is a wasteful number, since it uses less digits than its factorization.

1251210112130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21155.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 1251210112130 its reverse (312110121521), we get a palindrome (1563320233651).

The spelling of 1251210112130 in words is "one trillion, two hundred fifty-one billion, two hundred ten million, one hundred twelve thousand, one hundred thirty".