200100022120121 has 4 divisors (see below), whose sum is σ = 200145079549044. Its totient is φ = 200054964691200.

The previous prime is 200100022120087. The next prime is 200100022120133. The reversal of 200100022120121 is 121021220001002.

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 146943732541225 + 53156289578896 = 12122035^2 + 7290836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200100022120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200100022120096 and 200100022120105.

It is not an unprimeable number, because it can be changed into a prime (200100022120151) 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, 22528707800 + ... + 22528716681.

It is an arithmetic number, because the mean of its divisors is an integer number (50036269887261).

Almost surely, 2^{200100022120121} is an apocalyptic number.

It is an amenable number.

200100022120121 is a deficient number, since it is larger than the sum of its proper divisors (45057428923).

200100022120121 is an equidigital number, since it uses as much as digits as its factorization.

200100022120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45057428922.

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

Adding to 200100022120121 its reverse (121021220001002), we get a palindrome (321121242121123).

The spelling of 200100022120121 in words is "two hundred trillion, one hundred billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".