122100100121 has 4 divisors (see below), whose sum is σ = 128526421200. Its totient is φ = 115673779044.

The previous prime is 122100100079. The next prime is 122100100141. The reversal of 122100100121 is 121001001221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121001001221 = 10949 ⋅11051329.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122100100121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100100141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213160511 + ... + 3213160548.

It is an arithmetic number, because the mean of its divisors is an integer number (32131605300).

Almost surely, 2^122100100121 is an apocalyptic number.

It is an amenable number.

122100100121 is a deficient number, since it is larger than the sum of its proper divisors (6426321079).

122100100121 is an equidigital number, since it uses as much as digits as its factorization.

122100100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426321078.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 122100100121 its reverse (121001001221), we get a palindrome (243101101342).

It can be divided in two parts, 1 and 22100100121, that added together give a palindrome (22100100122).

The spelling of 122100100121 in words is "one hundred twenty-two billion, one hundred million, one hundred thousand, one hundred twenty-one".