1013120100123 has 16 divisors (see below), whose sum is σ = 1382496842496. Its totient is φ = 659584185120.

The previous prime is 1013120100071. The next prime is 1013120100151. The reversal of 1013120100123 is 3210010213101.

It is a happy number.

It is not a de Polignac number, because 1013120100123 - 2⁶ = 1013120100059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1013120100193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22440 + ... + 1423637.

It is an arithmetic number, because the mean of its divisors is an integer number (86406052656).

Almost surely, 2^{1013120100123} is an apocalyptic number.

1013120100123 is a deficient number, since it is larger than the sum of its proper divisors (369376742373).

1013120100123 is a wasteful number, since it uses less digits than its factorization.

1013120100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451554.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1013120100123 its reverse (3210010213101), we get a palindrome (4223130313224).

The spelling of 1013120100123 in words is "one trillion, thirteen billion, one hundred twenty million, one hundred thousand, one hundred twenty-three".