12201434431 has 2 divisors, whose sum is σ = 12201434432. Its totient is φ = 12201434430.

The previous prime is 12201434363. The next prime is 12201434447. The reversal of 12201434431 is 13443410221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201434431 is a prime.

It is a super-2 number, since 2×12201434431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12201434396 and 12201434405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201434461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100717215 + 6100717216.

It is an arithmetic number, because the mean of its divisors is an integer number (6100717216).

Almost surely, 2^12201434431 is an apocalyptic number.

12201434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201434431 is an equidigital number, since it uses as much as digits as its factorization.

12201434431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 12201434431 its reverse (13443410221), we get a palindrome (25644844652).

The spelling of 12201434431 in words is "twelve billion, two hundred one million, four hundred thirty-four thousand, four hundred thirty-one".