200121111101212 has 72 divisors (see below), whose sum is σ = 408392642327040. Its totient is φ = 85555013654880.

The previous prime is 200121111101161. The next prime is 200121111101227. The reversal of 200121111101212 is 212101111121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1174534387 + ... + 1174704757.

It is an arithmetic number, because the mean of its divisors is an integer number (5672120032320).

Almost surely, 2^{200121111101212} is an apocalyptic number.

It is an amenable number.

200121111101212 is an abundant number, since it is smaller than the sum of its proper divisors (208271531225828).

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

200121111101212 is a wasteful number, since it uses less digits than its factorization.

200121111101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185111 (or 185102 counting only the distinct ones).

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

Adding to 200121111101212 its reverse (212101111121002), we get a palindrome (412222222222214).

The spelling of 200121111101212 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, one hundred one thousand, two hundred twelve".