122122122222251 has 2 divisors, whose sum is σ = 122122122222252. Its totient is φ = 122122122222250.

The previous prime is 122122122222173. The next prime is 122122122222253. The reversal of 122122122222251 is 152222221221221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122122122222251 - 2²² = 122122118027947 is a prime.

Together with 122122122222253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122122122222253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61061061111125 + 61061061111126.

It is an arithmetic number, because the mean of its divisors is an integer number (61061061111126).

Almost surely, 2^{122122122222251} is an apocalyptic number.

122122122222251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122122122222251 is an equidigital number, since it uses as much as digits as its factorization.

122122122222251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5120, while the sum is 29.

Adding to 122122122222251 its reverse (152222221221221), we get a palindrome (274344343443472).

The spelling of 122122122222251 in words is "one hundred twenty-two trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred fifty-one".