122550055221 has 16 divisors (see below), whose sum is σ = 178260599808. Its totient is φ = 74270271600.

The previous prime is 122550055213. The next prime is 122550055253.

122550055221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 122550055221 - 2³ = 122550055213 is a prime.

It is a super-3 number, since 3×122550055221³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122550050221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600276 + ... + 1675106.

It is an arithmetic number, because the mean of its divisors is an integer number (11141287488).

Almost surely, 2^122550055221 is an apocalyptic number.

122550055221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122550055221 is a deficient number, since it is larger than the sum of its proper divisors (55710544587).

122550055221 is a wasteful number, since it uses less digits than its factorization.

122550055221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124472.

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 122550055221 in words is "one hundred twenty-two billion, five hundred fifty million, fifty-five thousand, two hundred twenty-one".