1201151310123 has 12 divisors (see below), whose sum is σ = 1701284671160. Its totient is φ = 753663566592.

The previous prime is 1201151310083. The next prime is 1201151310173. The reversal of 1201151310123 is 3210131511021.

It is not a de Polignac number, because 1201151310123 - 2¹⁷ = 1201151179051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201151310123.

It is not an unprimeable number, because it can be changed into a prime (1201151310173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 692704618 + ... + 692706351.

Almost surely, 2^{1201151310123} is an apocalyptic number.

1201151310123 is a deficient number, since it is larger than the sum of its proper divisors (500133361037).

1201151310123 is a wasteful number, since it uses less digits than its factorization.

1201151310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385411006 (or 1385410989 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 1201151310123 its reverse (3210131511021), we get a palindrome (4411282821144).

The spelling of 1201151310123 in words is "one trillion, two hundred one billion, one hundred fifty-one million, three hundred ten thousand, one hundred twenty-three".