122100144121 has 4 divisors (see below), whose sum is σ = 122125215744. Its totient is φ = 122075072500.

The previous prime is 122100144107. The next prime is 122100144161. The reversal of 122100144121 is 121441001221.

It is a happy number.

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: 121441001221 = 229 ⋅530310049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122100144121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100144161) 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, 12528505 + ... + 12538246.

It is an arithmetic number, because the mean of its divisors is an integer number (30531303936).

Almost surely, 2^122100144121 is an apocalyptic number.

It is an amenable number.

122100144121 is a deficient number, since it is larger than the sum of its proper divisors (25071623).

122100144121 is an equidigital number, since it uses as much as digits as its factorization.

122100144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25071622.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122100144121 its reverse (121441001221), we get a palindrome (243541145342).

The spelling of 122100144121 in words is "one hundred twenty-two billion, one hundred million, one hundred forty-four thousand, one hundred twenty-one".