12101201231 has 4 divisors (see below), whose sum is σ = 13829944272. Its totient is φ = 10372458192.

The previous prime is 12101201197. The next prime is 12101201243. The reversal of 12101201231 is 13210210121.

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

It is a cyclic number.

It is not a de Polignac number, because 12101201231 - 2²² = 12097006927 is a prime.

It is a super-2 number, since 2×12101201231² (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 (12101201131) 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, 864371510 + ... + 864371523.

It is an arithmetic number, because the mean of its divisors is an integer number (3457486068).

Almost surely, 2^12101201231 is an apocalyptic number.

12101201231 is a deficient number, since it is larger than the sum of its proper divisors (1728743041).

12101201231 is an equidigital number, since it uses as much as digits as its factorization.

12101201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728743040.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12101201231 its reverse (13210210121), we get a palindrome (25311411352).

The spelling of 12101201231 in words is "twelve billion, one hundred one million, two hundred one thousand, two hundred thirty-one".