1230012321123 has 16 divisors (see below), whose sum is σ = 1671667446176. Its totient is φ = 804306827520.

The previous prime is 1230012321119. The next prime is 1230012321169. The reversal of 1230012321123 is 3211232100321.

It is not a de Polignac number, because 1230012321123 - 2² = 1230012321119 is a prime.

It is a super-2 number, since 2×1230012321123² (a number of 25 digits) contains 22 as substring.

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 1230012321123.

It is not an unprimeable number, because it can be changed into a prime (1230012321023) 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, 15475540 + ... + 15554817.

It is an arithmetic number, because the mean of its divisors is an integer number (104479215386).

Almost surely, 2^{1230012321123} is an apocalyptic number.

1230012321123 is a deficient number, since it is larger than the sum of its proper divisors (441655125053).

1230012321123 is a wasteful number, since it uses less digits than its factorization.

1230012321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31030614.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1230012321123 its reverse (3211232100321), we get a palindrome (4441244421444).

The spelling of 1230012321123 in words is "one trillion, two hundred thirty billion, twelve million, three hundred twenty-one thousand, one hundred twenty-three".