122542033221 has 16 divisors (see below), whose sum is σ = 182336529600. Its totient is φ = 81337939344.

The previous prime is 122542033217. The next prime is 122542033253. The reversal of 122542033221 is 122330245221.

122542033221 is a `hidden beast` number, since 12 + 2 + 5 + 420 + 3 + 3 + 221 = 666.

It is not a de Polignac number, because 122542033221 - 2² = 122542033217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122542031221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9903411 + ... + 9915776.

It is an arithmetic number, because the mean of its divisors is an integer number (11396033100).

Almost surely, 2^122542033221 is an apocalyptic number.

It is an amenable number.

122542033221 is a deficient number, since it is larger than the sum of its proper divisors (59794496379).

122542033221 is a wasteful number, since it uses less digits than its factorization.

122542033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19819425 (or 19819419 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 122542033221 its reverse (122330245221), we get a palindrome (244872278442).

The spelling of 122542033221 in words is "one hundred twenty-two billion, five hundred forty-two million, thirty-three thousand, two hundred twenty-one".