12220210221257 has 2 divisors, whose sum is σ = 12220210221258. Its totient is φ = 12220210221256.

The previous prime is 12220210221221. The next prime is 12220210221277. The reversal of 12220210221257 is 75212201202221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10557956988601 + 1662253232656 = 3249301^2 + 1289284^2 .

It is a cyclic number.

It is not a de Polignac number, because 12220210221257 - 2¹⁰ = 12220210220233 is a prime.

It is not a weakly prime, because it can be changed into another prime (12220210221277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110105110628 + 6110105110629.

It is an arithmetic number, because the mean of its divisors is an integer number (6110105110629).

Almost surely, 2^{12220210221257} is an apocalyptic number.

It is an amenable number.

12220210221257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220210221257 is an equidigital number, since it uses as much as digits as its factorization.

12220210221257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 12220210221257 its reverse (75212201202221), we get a palindrome (87432411423478).

The spelling of 12220210221257 in words is "twelve trillion, two hundred twenty billion, two hundred ten million, two hundred twenty-one thousand, two hundred fifty-seven".