12205004131 has 2 divisors, whose sum is σ = 12205004132. Its totient is φ = 12205004130.

The previous prime is 12205004129. The next prime is 12205004137. The reversal of 12205004131 is 13140050221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12205004131 - 2¹ = 12205004129 is a prime.

It is a super-2 number, since 2×12205004131² (a number of 21 digits) contains 22 as substring.

Together with 12205004129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12205004099 and 12205004108.

It is not a weakly prime, because it can be changed into another prime (12205004137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6102502065 + 6102502066.

It is an arithmetic number, because the mean of its divisors is an integer number (6102502066).

Almost surely, 2^12205004131 is an apocalyptic number.

12205004131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12205004131 is an equidigital number, since it uses as much as digits as its factorization.

12205004131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 12205004131 its reverse (13140050221), we get a palindrome (25345054352).

The spelling of 12205004131 in words is "twelve billion, two hundred five million, four thousand, one hundred thirty-one".