200000111210121 has 4 divisors (see below), whose sum is σ = 266666814946832. Its totient is φ = 133333407473412.

The previous prime is 200000111210113. The next prime is 200000111210131. The reversal of 200000111210121 is 121012111000002.

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 not a de Polignac number, because 200000111210121 - 2³ = 200000111210113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200000111210097 and 200000111210106.

It is not an unprimeable number, because it can be changed into a prime (200000111210131) 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, 33333351868351 + ... + 33333351868356.

It is an arithmetic number, because the mean of its divisors is an integer number (66666703736708).

Almost surely, 2^{200000111210121} is an apocalyptic number.

It is an amenable number.

200000111210121 is a deficient number, since it is larger than the sum of its proper divisors (66666703736711).

200000111210121 is an equidigital number, since it uses as much as digits as its factorization.

200000111210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66666703736710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 200000111210121 its reverse (121012111000002), we get a palindrome (321012222210123).

The spelling of 200000111210121 in words is "two hundred trillion, one hundred eleven million, two hundred ten thousand, one hundred twenty-one".