122216455 has 8 divisors (see below), whose sum is σ = 154378800. Its totient is φ = 92627136.

The previous prime is 122216443. The next prime is 122216461. The reversal of 122216455 is 554612221.

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

It is a cyclic number.

It is not a de Polignac number, because 122216455 - 2⁷ = 122216327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643150 + ... + 643339.

It is an arithmetic number, because the mean of its divisors is an integer number (19297350).

Almost surely, 2^122216455 is an apocalyptic number.

122216455 is a deficient number, since it is larger than the sum of its proper divisors (32162345).

122216455 is a wasteful number, since it uses less digits than its factorization.

122216455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286513.

The product of its digits is 4800, while the sum is 28.

The square root of 122216455 is about 11055.1551323353. The cubic root of 122216455 is about 496.2607118263.

Adding to 122216455 its reverse (554612221), we get a palindrome (676828676).

The spelling of 122216455 in words is "one hundred twenty-two million, two hundred sixteen thousand, four hundred fifty-five".