1312251120111 has 32 divisors (see below), whose sum is σ = 1785428689408. Its totient is φ = 857139978240.

The previous prime is 1312251120091. The next prime is 1312251120149. The reversal of 1312251120111 is 1110211522131.

It is not a de Polignac number, because 1312251120111 - 2⁵ = 1312251120079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312251120211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150190335 + ... + 150199071.

It is an arithmetic number, because the mean of its divisors is an integer number (55794646544).

Almost surely, 2^{1312251120111} is an apocalyptic number.

1312251120111 is a deficient number, since it is larger than the sum of its proper divisors (473177569297).

1312251120111 is a wasteful number, since it uses less digits than its factorization.

1312251120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951.

The product of its (nonzero) digits is 120, while the sum is 21.

Adding to 1312251120111 its reverse (1110211522131), we get a palindrome (2422462642242).

The spelling of 1312251120111 in words is "one trillion, three hundred twelve billion, two hundred fifty-one million, one hundred twenty thousand, one hundred eleven".