12100400231 has 4 divisors (see below), whose sum is σ = 12106662072. Its totient is φ = 12094138392.

The previous prime is 12100400227. The next prime is 12100400293. The reversal of 12100400231 is 13200400121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13200400121 = 2791 ⋅4729631.

It is a cyclic number.

It is not a de Polignac number, because 12100400231 - 2² = 12100400227 is a prime.

It is a super-2 number, since 2×12100400231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100400731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3128021 + ... + 3131886.

It is an arithmetic number, because the mean of its divisors is an integer number (3026665518).

Almost surely, 2^12100400231 is an apocalyptic number.

12100400231 is a deficient number, since it is larger than the sum of its proper divisors (6261841).

12100400231 is an equidigital number, since it uses as much as digits as its factorization.

12100400231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6261840.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12100400231 its reverse (13200400121), we get a palindrome (25300800352).

The spelling of 12100400231 in words is "twelve billion, one hundred million, four hundred thousand, two hundred thirty-one".