122210021251 has 2 divisors, whose sum is σ = 122210021252. Its totient is φ = 122210021250.

The previous prime is 122210021233. The next prime is 122210021267. The reversal of 122210021251 is 152120012221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122210021251 is a prime.

It is not a weakly prime, because it can be changed into another prime (122210021291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61105010625 + 61105010626.

It is an arithmetic number, because the mean of its divisors is an integer number (61105010626).

Almost surely, 2^122210021251 is an apocalyptic number.

122210021251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122210021251 is an equidigital number, since it uses as much as digits as its factorization.

122210021251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 122210021251 its reverse (152120012221), we get a palindrome (274330033472).

The spelling of 122210021251 in words is "one hundred twenty-two billion, two hundred ten million, twenty-one thousand, two hundred fifty-one".