12122221151 has 2 divisors, whose sum is σ = 12122221152. Its totient is φ = 12122221150.

The previous prime is 12122221147. The next prime is 12122221219. The reversal of 12122221151 is 15112222121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12122221151 - 2² = 12122221147 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122221051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061110575 + 6061110576.

It is an arithmetic number, because the mean of its divisors is an integer number (6061110576).

Almost surely, 2^12122221151 is an apocalyptic number.

12122221151 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122221151 is an equidigital number, since it uses as much as digits as its factorization.

12122221151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160, while the sum is 20.

Adding to 12122221151 its reverse (15112222121), we get a palindrome (27234443272).

The spelling of 12122221151 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred fifty-one".