12201121249 has 2 divisors, whose sum is σ = 12201121250. Its totient is φ = 12201121248.

The previous prime is 12201121183. The next prime is 12201121253. The reversal of 12201121249 is 94212110221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7622163025 + 4578958224 = 87305^2 + 67668^2 .

It is an emirp because it is prime and its reverse (94212110221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12201121249 - 2¹¹ = 12201119201 is a prime.

It is not a weakly prime, because it can be changed into another prime (12201128249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100560624 + 6100560625.

It is an arithmetic number, because the mean of its divisors is an integer number (6100560625).

Almost surely, 2^12201121249 is an apocalyptic number.

It is an amenable number.

12201121249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201121249 is an equidigital number, since it uses as much as digits as its factorization.

12201121249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 12201121249 in words is "twelve billion, two hundred one million, one hundred twenty-one thousand, two hundred forty-nine".