123122310011440 has 20 divisors (see below), whose sum is σ = 286259370776784. Its totient is φ = 49248924004544.

The previous prime is 123122310011419. The next prime is 123122310011447. The reversal of 123122310011440 is 44110013221321.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (123122310011447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769514437492 + ... + 769514437651.

Almost surely, 2^{123122310011440} is an apocalyptic number.

123122310011440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123122310011440 is an abundant number, since it is smaller than the sum of its proper divisors (163137060765344).

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

123122310011440 is a wasteful number, since it uses less digits than its factorization.

123122310011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539028875156 (or 1539028875150 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 123122310011440 its reverse (44110013221321), we get a palindrome (167232323232761).

The spelling of 123122310011440 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, three hundred ten million, eleven thousand, four hundred forty".