200011021122121 has 4 divisors (see below), whose sum is σ = 218193841224144. Its totient is φ = 181828201020100.

The previous prime is 200011021122113. The next prime is 200011021122247. The reversal of 200011021122121 is 121221120110002.

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 cyclic number.

It is not a de Polignac number, because 200011021122121 - 2³ = 200011021122113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200011021122095 and 200011021122104.

It is not an unprimeable number, because it can be changed into a prime (200011021152121) 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, 9091410050995 + ... + 9091410051016.

It is an arithmetic number, because the mean of its divisors is an integer number (54548460306036).

Almost surely, 2^{200011021122121} is an apocalyptic number.

It is an amenable number.

200011021122121 is a deficient number, since it is larger than the sum of its proper divisors (18182820102023).

200011021122121 is a wasteful number, since it uses less digits than its factorization.

200011021122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18182820102022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 200011021122121 its reverse (121221120110002), we get a palindrome (321232141232123).

The spelling of 200011021122121 in words is "two hundred trillion, eleven billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".