122217487 has 8 divisors (see below), whose sum is σ = 139744256. Its totient is φ = 104707512.

The previous prime is 122217479. The next prime is 122217493. The reversal of 122217487 is 784712221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122217487 - 2³ = 122217479 is a prime.

It is a super-2 number, since 2×122217487² = 29874228257190338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122217427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24478 + ... + 29044.

It is an arithmetic number, because the mean of its divisors is an integer number (17468032).

Almost surely, 2^122217487 is an apocalyptic number.

122217487 is a deficient number, since it is larger than the sum of its proper divisors (17526769).

122217487 is an equidigital number, since it uses as much as digits as its factorization.

122217487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8397.

The product of its digits is 12544, while the sum is 34.

The square root of 122217487 is about 11055.2018072942. The cubic root of 122217487 is about 496.2621086366.

The spelling of 122217487 in words is "one hundred twenty-two million, two hundred seventeen thousand, four hundred eighty-seven".