122421655 has 8 divisors (see below), whose sum is σ = 154638000. Its totient is φ = 92782656.

The previous prime is 122421647. The next prime is 122421659. The reversal of 122421655 is 556124221.

122421655 is nontrivially palindromic in base 2.

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 122421655 - 2³ = 122421647 is a prime.

It is a super-2 number, since 2×122421655² = 29974123225878050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644230 + ... + 644419.

It is an arithmetic number, because the mean of its divisors is an integer number (19329750).

Almost surely, 2^122421655 is an apocalyptic number.

122421655 is a deficient number, since it is larger than the sum of its proper divisors (32216345).

122421655 is a wasteful number, since it uses less digits than its factorization.

122421655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288673.

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

The square root of 122421655 is about 11064.4319781903. The cubic root of 122421655 is about 496.5382951768.

Adding to 122421655 its reverse (556124221), we get a palindrome (678545876).

The spelling of 122421655 in words is "one hundred twenty-two million, four hundred twenty-one thousand, six hundred fifty-five".