122220451 has 2 divisors, whose sum is σ = 122220452. Its totient is φ = 122220450.

The previous prime is 122220437. The next prime is 122220479. The reversal of 122220451 is 154022221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122220451 - 2⁹ = 122219939 is a prime.

It is not a weakly prime, because it can be changed into another prime (122220401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110225 + 61110226.

It is an arithmetic number, because the mean of its divisors is an integer number (61110226).

Almost surely, 2^122220451 is an apocalyptic number.

122220451 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220451 is an equidigital number, since it uses as much as digits as its factorization.

122220451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 122220451 is about 11055.3358610220. The cubic root of 122220451 is about 496.2661203620.

Adding to 122220451 its reverse (154022221), we get a palindrome (276242672).

The spelling of 122220451 in words is "one hundred twenty-two million, two hundred twenty thousand, four hundred fifty-one".