200121112211112 has 160 divisors (see below), whose sum is σ = 562634245800000. Its totient is φ = 66456046944000.

The previous prime is 200121112211101. The next prime is 200121112211117. The reversal of 200121112211112 is 211112211121002.

It is a happy number.

200121112211112 is a `hidden beast` number, since 200 + 121 + 11 + 221 + 1 + 112 = 666.

200121112211112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×200121112211112² (a number of 29 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (200121112211117) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 910147987 + ... + 910367837.

It is an arithmetic number, because the mean of its divisors is an integer number (3516464036250).

Almost surely, 2^{200121112211112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200121112211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281317122900000).

200121112211112 is an abundant number, since it is smaller than the sum of its proper divisors (362513133588888).

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

200121112211112 is a wasteful number, since it uses less digits than its factorization.

200121112211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225149 (or 225136 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 200121112211112 its reverse (211112211121002), we get a palindrome (411233323332114).

The spelling of 200121112211112 in words is "two hundred trillion, one hundred twenty-one billion, one hundred twelve million, two hundred eleven thousand, one hundred twelve".