12121275527 has 2 divisors, whose sum is σ = 12121275528. Its totient is φ = 12121275526.

The previous prime is 12121275503. The next prime is 12121275557. The reversal of 12121275527 is 72557212121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12121275527 - 2²⁸ = 11852840071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121275557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060637763 + 6060637764.

It is an arithmetic number, because the mean of its divisors is an integer number (6060637764).

Almost surely, 2^12121275527 is an apocalyptic number.

12121275527 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121275527 is an equidigital number, since it uses as much as digits as its factorization.

12121275527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19600, while the sum is 35.

Adding to 12121275527 its reverse (72557212121), we get a palindrome (84678487648).

The spelling of 12121275527 in words is "twelve billion, one hundred twenty-one million, two hundred seventy-five thousand, five hundred twenty-seven".