200121111111110 has 24 divisors (see below), whose sum is σ = 419029102041840. Its totient is φ = 68612952380784.

The previous prime is 200121111111071. The next prime is 200121111111127. The reversal of 200121111111110 is 11111111121002.

200121111111110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×200121111111110² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204205214930 + ... + 204205215909.

It is an arithmetic number, because the mean of its divisors is an integer number (17459545918410).

Almost surely, 2^{200121111111110} is an apocalyptic number.

200121111111110 is an abundant number, since it is smaller than the sum of its proper divisors (218907990930730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

200121111111110 is a wasteful number, since it uses less digits than its factorization.

200121111111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408410430860 (or 408410430853 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 200121111111110 its reverse (11111111121002), we get a palindrome (211232222232112).

The spelling of 200121111111110 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, one hundred ten".