122221655 has 8 divisors (see below), whose sum is σ = 153042912. Its totient is φ = 93526048.

The previous prime is 122221639. The next prime is 122221679. The reversal of 122221655 is 556122221.

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 122221655 - 2⁴ = 122221639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531284 + ... + 531513.

It is an arithmetic number, because the mean of its divisors is an integer number (19130364).

Almost surely, 2^122221655 is an apocalyptic number.

122221655 is a deficient number, since it is larger than the sum of its proper divisors (30821257).

122221655 is a wasteful number, since it uses less digits than its factorization.

122221655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062825.

The product of its digits is 2400, while the sum is 26.

The square root of 122221655 is about 11055.3903142313. The cubic root of 122221655 is about 496.2677499377.

Adding to 122221655 its reverse (556122221), we get a palindrome (678343876).

The spelling of 122221655 in words is "one hundred twenty-two million, two hundred twenty-one thousand, six hundred fifty-five".