12121210441 has 2 divisors, whose sum is σ = 12121210442. Its totient is φ = 12121210440.

The previous prime is 12121210429. The next prime is 12121210489. The reversal of 12121210441 is 14401212121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12121129216 + 81225 = 110096^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121210441 - 2³¹ = 9973726793 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121213441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060605220 + 6060605221.

It is an arithmetic number, because the mean of its divisors is an integer number (6060605221).

Almost surely, 2^12121210441 is an apocalyptic number.

It is an amenable number.

12121210441 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121210441 is an equidigital number, since it uses as much as digits as its factorization.

12121210441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12121210441 its reverse (14401212121), we get a palindrome (26522422562).

The spelling of 12121210441 in words is "twelve billion, one hundred twenty-one million, two hundred ten thousand, four hundred forty-one".