1251113323102 has 4 divisors (see below), whose sum is σ = 1876669984656. Its totient is φ = 625556661550.

The previous prime is 1251113323093. The next prime is 1251113323133. The reversal of 1251113323102 is 2013233111521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312778330774 + ... + 312778330777.

It is an arithmetic number, because the mean of its divisors is an integer number (469167496164).

Almost surely, 2^{1251113323102} is an apocalyptic number.

1251113323102 is a deficient number, since it is larger than the sum of its proper divisors (625556661554).

1251113323102 is an equidigital number, since it uses as much as digits as its factorization.

1251113323102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625556661553.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 1251113323102 its reverse (2013233111521), we get a palindrome (3264346434623).

The spelling of 1251113323102 in words is "one trillion, two hundred fifty-one billion, one hundred thirteen million, three hundred twenty-three thousand, one hundred two".