122540121 has 40 divisors (see below), whose sum is σ = 202222944. Its totient is φ = 73327680.

The previous prime is 122540111. The next prime is 122540147. The reversal of 122540121 is 121045221.

122540121 is a `hidden beast` number, since 1 + 2 + 2 + 540 + 121 = 666.

It is not a de Polignac number, because 122540121 - 2⁹ = 122539609 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122540094 and 122540103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122540111) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 73125 + ... + 74781.

Almost surely, 2^122540121 is an apocalyptic number.

122540121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122540121 is a deficient number, since it is larger than the sum of its proper divisors (79682823).

122540121 is a wasteful number, since it uses less digits than its factorization.

122540121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 122540121 is about 11069.7841442370. The cubic root of 122540121 is about 496.6984083032.

Adding to 122540121 its reverse (121045221), we get a palindrome (243585342).

The spelling of 122540121 in words is "one hundred twenty-two million, five hundred forty thousand, one hundred twenty-one".