122217479 has 2 divisors, whose sum is σ = 122217480. Its totient is φ = 122217478.

The previous prime is 122217467. The next prime is 122217493. The reversal of 122217479 is 974712221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122217479 - 2⁴ = 122217463 is a prime.

It is a super-2 number, since 2×122217479² = 29874224346230882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122217499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61108739 + 61108740.

It is an arithmetic number, because the mean of its divisors is an integer number (61108740).

Almost surely, 2^122217479 is an apocalyptic number.

122217479 is a deficient number, since it is larger than the sum of its proper divisors (1).

122217479 is an equidigital number, since it uses as much as digits as its factorization.

122217479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 35.

The square root of 122217479 is about 11055.2014454735. The cubic root of 122217479 is about 496.2620978086.

The spelling of 122217479 in words is "one hundred twenty-two million, two hundred seventeen thousand, four hundred seventy-nine".