12123201103131 has 4 divisors (see below), whose sum is σ = 16164268137512. Its totient is φ = 8082134068752.

The previous prime is 12123201103093. The next prime is 12123201103187. The reversal of 12123201103131 is 13130110232121.

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

It is not a de Polignac number, because 12123201103131 - 2⁷ = 12123201103003 is a prime.

It is a super-2 number, since 2×12123201103131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12123201103098 and 12123201103107.

It is not an unprimeable number, because it can be changed into a prime (12123201103331) 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, 2020533517186 + ... + 2020533517191.

It is an arithmetic number, because the mean of its divisors is an integer number (4041067034378).

Almost surely, 2^{12123201103131} is an apocalyptic number.

12123201103131 is a deficient number, since it is larger than the sum of its proper divisors (4041067034381).

12123201103131 is an equidigital number, since it uses as much as digits as its factorization.

12123201103131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041067034380.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12123201103131 its reverse (13130110232121), we get a palindrome (25253311335252).

The spelling of 12123201103131 in words is "twelve trillion, one hundred twenty-three billion, two hundred one million, one hundred three thousand, one hundred thirty-one".