200122020100121 has 4 divisors (see below), whose sum is σ = 228710880114432. Its totient is φ = 171533160085812.

The previous prime is 200122020100091. The next prime is 200122020100139. The reversal of 200122020100121 is 121001020221002.

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.

It is a de Polignac number, because none of the positive numbers 2^k-200122020100121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 200122020100096 and 200122020100105.

It is not an unprimeable number, because it can be changed into a prime (200122020100021) 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, 14294430007145 + ... + 14294430007158.

It is an arithmetic number, because the mean of its divisors is an integer number (57177720028608).

Almost surely, 2^{200122020100121} is an apocalyptic number.

It is an amenable number.

200122020100121 is a deficient number, since it is larger than the sum of its proper divisors (28588860014311).

200122020100121 is an equidigital number, since it uses as much as digits as its factorization.

200122020100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28588860014310.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200122020100121 its reverse (121001020221002), we get a palindrome (321123040321123).

The spelling of 200122020100121 in words is "two hundred trillion, one hundred twenty-two billion, twenty million, one hundred thousand, one hundred twenty-one".