122112200200121 has 4 divisors (see below), whose sum is σ = 122497412188452. Its totient is φ = 121726988211792.

The previous prime is 122112200200061. The next prime is 122112200200141. The reversal of 122112200200121 is 121002002211221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69125738727721 + 52986461472400 = 8314189^2 + 7279180^2 .

It is a cyclic number.

It is not a de Polignac number, because 122112200200121 - 2¹⁰ = 122112200199097 is a prime.

It is a super-2 number, since 2×122112200200121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122112200200121.

It is not an unprimeable number, because it can be changed into a prime (122112200200141) 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, 192605993690 + ... + 192605994323.

It is an arithmetic number, because the mean of its divisors is an integer number (30624353047113).

Almost surely, 2^{122112200200121} is an apocalyptic number.

It is an amenable number.

122112200200121 is a deficient number, since it is larger than the sum of its proper divisors (385211988331).

122112200200121 is an equidigital number, since it uses as much as digits as its factorization.

122112200200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385211988330.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122112200200121 its reverse (121002002211221), we get a palindrome (243114202411342).

The spelling of 122112200200121 in words is "one hundred twenty-two trillion, one hundred twelve billion, two hundred million, two hundred thousand, one hundred twenty-one".