123130000211321 has 4 divisors (see below), whose sum is σ = 125453207762532. Its totient is φ = 120806792660112.

The previous prime is 123130000211287. The next prime is 123130000211327. The reversal of 123130000211321 is 123112000031321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106823304407296 + 16306695804025 = 10335536^2 + 4038155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123130000211321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123130000211293 and 123130000211302.

It is not an unprimeable number, because it can be changed into a prime (123130000211327) 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, 1161603775526 + ... + 1161603775631.

It is an arithmetic number, because the mean of its divisors is an integer number (31363301940633).

Almost surely, 2^{123130000211321} is an apocalyptic number.

It is an amenable number.

123130000211321 is a deficient number, since it is larger than the sum of its proper divisors (2323207551211).

123130000211321 is an equidigital number, since it uses as much as digits as its factorization.

123130000211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323207551210.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123130000211321 its reverse (123112000031321), we get a palindrome (246242000242642).

The spelling of 123130000211321 in words is "one hundred twenty-three trillion, one hundred thirty billion, two hundred eleven thousand, three hundred twenty-one".