12220121227 has 2 divisors, whose sum is σ = 12220121228. Its totient is φ = 12220121226.

The previous prime is 12220121201. The next prime is 12220121269. The reversal of 12220121227 is 72212102221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12220121227 - 2³¹ = 10072637579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220121198 and 12220121207.

It is not a weakly prime, because it can be changed into another prime (12220125227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110060613 + 6110060614.

It is an arithmetic number, because the mean of its divisors is an integer number (6110060614).

Almost surely, 2^12220121227 is an apocalyptic number.

12220121227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220121227 is an equidigital number, since it uses as much as digits as its factorization.

12220121227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 12220121227 its reverse (72212102221), we get a palindrome (84432223448).

The spelling of 12220121227 in words is "twelve billion, two hundred twenty million, one hundred twenty-one thousand, two hundred twenty-seven".