12261400523 has 2 divisors, whose sum is σ = 12261400524. Its totient is φ = 12261400522.

The previous prime is 12261400513. The next prime is 12261400531. The reversal of 12261400523 is 32500416221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12261400523 - 2⁸ = 12261400267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12261400492 and 12261400501.

It is not a weakly prime, because it can be changed into another prime (12261400513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6130700261 + 6130700262.

It is an arithmetic number, because the mean of its divisors is an integer number (6130700262).

Almost surely, 2^12261400523 is an apocalyptic number.

12261400523 is a deficient number, since it is larger than the sum of its proper divisors (1).

12261400523 is an equidigital number, since it uses as much as digits as its factorization.

12261400523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 12261400523 its reverse (32500416221), we get a palindrome (44761816744).

The spelling of 12261400523 in words is "twelve billion, two hundred sixty-one million, four hundred thousand, five hundred twenty-three".