12222151 has 2 divisors, whose sum is σ = 12222152. Its totient is φ = 12222150.

The previous prime is 12222127. The next prime is 12222211. The reversal of 12222151 is 15122221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12222151 - 2²¹ = 10124999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111075 + 6111076.

It is an arithmetic number, because the mean of its divisors is an integer number (6111076).

Almost surely, 2^12222151 is an apocalyptic number.

12222151 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222151 is an equidigital number, since it uses as much as digits as its factorization.

12222151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80, while the sum is 16.

The square root of 12222151 is about 3496.0193077270. The cubic root of 12222151 is about 230.3469935671.

Adding to 12222151 its reverse (15122221), we get a palindrome (27344372).

The spelling of 12222151 in words is "twelve million, two hundred twenty-two thousand, one hundred fifty-one".