122421555455 has 16 divisors (see below), whose sum is σ = 149222787840. Its totient is φ = 96402501888.

The previous prime is 122421555437. The next prime is 122421555467. The reversal of 122421555455 is 554555124221.

It is a cyclic number.

It is not a de Polignac number, because 122421555455 - 2⁶ = 122421555391 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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517592 + ... + 716061.

It is an arithmetic number, because the mean of its divisors is an integer number (9326424240).

Almost surely, 2^122421555455 is an apocalyptic number.

122421555455 is a deficient number, since it is larger than the sum of its proper divisors (26801232385).

122421555455 is a wasteful number, since it uses less digits than its factorization.

122421555455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233970.

The product of its digits is 400000, while the sum is 41.

Adding to 122421555455 its reverse (554555124221), we get a palindrome (676976679676).

The spelling of 122421555455 in words is "one hundred twenty-two billion, four hundred twenty-one million, five hundred fifty-five thousand, four hundred fifty-five".