1320100112123 has 24 divisors (see below), whose sum is σ = 1431780756480. Its totient is φ = 1216575491040.

The previous prime is 1320100112119. The next prime is 1320100112159. The reversal of 1320100112123 is 3212110010231.

It is not a de Polignac number, because 1320100112123 - 2² = 1320100112119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320100112323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 397738658 + ... + 397741976.

It is an arithmetic number, because the mean of its divisors is an integer number (59657531520).

Almost surely, 2^{1320100112123} is an apocalyptic number.

1320100112123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1320100112123 is a deficient number, since it is larger than the sum of its proper divisors (111680644357).

1320100112123 is a wasteful number, since it uses less digits than its factorization.

1320100112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459 (or 6446 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1320100112123 its reverse (3212110010231), we get a palindrome (4532210122354).

The spelling of 1320100112123 in words is "one trillion, three hundred twenty billion, one hundred million, one hundred twelve thousand, one hundred twenty-three".