12002123131 has 16 divisors (see below), whose sum is σ = 12795314688. Its totient is φ = 11218816000.

The previous prime is 12002123117. The next prime is 12002123141. The reversal of 12002123131 is 13132120021.

It is a cyclic number.

It is not a de Polignac number, because 12002123131 - 2⁵ = 12002123099 is a prime.

It is a super-2 number, since 2×12002123131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002123141) 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, 2273511 + ... + 2278783.

It is an arithmetic number, because the mean of its divisors is an integer number (799707168).

Almost surely, 2^12002123131 is an apocalyptic number.

12002123131 is a deficient number, since it is larger than the sum of its proper divisors (793191557).

12002123131 is a wasteful number, since it uses less digits than its factorization.

12002123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12002123131 its reverse (13132120021), we get a palindrome (25134243152).

The spelling of 12002123131 in words is "twelve billion, two million, one hundred twenty-three thousand, one hundred thirty-one".