200111212122012 has 72 divisors (see below), whose sum is σ = 507171494269440. Its totient is φ = 66527726952960.

The previous prime is 200111212121987. The next prime is 200111212122047. The reversal of 200111212122012 is 210221212111002.

200111212122012 is a `hidden beast` number, since 200 + 1 + 112 + 121 + 220 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 550359312 + ... + 550722792.

It is an arithmetic number, because the mean of its divisors is an integer number (7044048531520).

Almost surely, 2^{200111212122012} is an apocalyptic number.

It is an amenable number.

200111212122012 is an abundant number, since it is smaller than the sum of its proper divisors (307060282147428).

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

200111212122012 is a wasteful number, since it uses less digits than its factorization.

200111212122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403803 (or 403798 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 200111212122012 its reverse (210221212111002), we get a palindrome (410332424233014).

The spelling of 200111212122012 in words is "two hundred trillion, one hundred eleven billion, two hundred twelve million, one hundred twenty-two thousand, twelve".