200011021121 has 4 divisors (see below), whose sum is σ = 200462513712. Its totient is φ = 199559528532.

The previous prime is 200011021109. The next prime is 200011021123. The reversal of 200011021121 is 121120110002.

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 200011021121 - 2⁶ = 200011021057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200011021123) 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, 225745631 + ... + 225746516.

It is an arithmetic number, because the mean of its divisors is an integer number (50115628428).

Almost surely, 2^200011021121 is an apocalyptic number.

It is an amenable number.

200011021121 is a deficient number, since it is larger than the sum of its proper divisors (451492591).

200011021121 is an equidigital number, since it uses as much as digits as its factorization.

200011021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451492590.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 200011021121 its reverse (121120110002), we get a palindrome (321131131123).

The spelling of 200011021121 in words is "two hundred billion, eleven million, twenty-one thousand, one hundred twenty-one".