200111001210121 has 4 divisors (see below), whose sum is σ = 200111053456000. Its totient is φ = 200110948964244.

The previous prime is 200111001210097. The next prime is 200111001210139. The reversal of 200111001210121 is 121012100111002.

It is a happy number.

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 200111001210121 - 2⁵ = 200111001210089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200111001213121) 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, 19880421 + ... + 28203778.

It is an arithmetic number, because the mean of its divisors is an integer number (50027763364000).

Almost surely, 2^{200111001210121} is an apocalyptic number.

It is an amenable number.

200111001210121 is a deficient number, since it is larger than the sum of its proper divisors (52245879).

200111001210121 is an equidigital number, since it uses as much as digits as its factorization.

200111001210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52245878.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 200111001210121 its reverse (121012100111002), we get a palindrome (321123101321123).

The spelling of 200111001210121 in words is "two hundred trillion, one hundred eleven billion, one million, two hundred ten thousand, one hundred twenty-one".