12101021431 has 2 divisors, whose sum is σ = 12101021432. Its totient is φ = 12101021430.

The previous prime is 12101021417. The next prime is 12101021459. The reversal of 12101021431 is 13412010121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12101021431 is a prime.

It is a super-2 number, since 2×12101021431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101021531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050510715 + 6050510716.

It is an arithmetic number, because the mean of its divisors is an integer number (6050510716).

Almost surely, 2^12101021431 is an apocalyptic number.

12101021431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101021431 is an equidigital number, since it uses as much as digits as its factorization.

12101021431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12101021431 its reverse (13412010121), we get a palindrome (25513031552).

The spelling of 12101021431 in words is "twelve billion, one hundred one million, twenty-one thousand, four hundred thirty-one".