200021121112 has 8 divisors (see below), whose sum is σ = 375039602100. Its totient is φ = 100010560552.

The previous prime is 200021121077. The next prime is 200021121133. The reversal of 200021121112 is 211121120002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×200021121112³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200021121092 and 200021121101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12501320062 + ... + 12501320077.

Almost surely, 2^200021121112 is an apocalyptic number.

It is an amenable number.

200021121112 is a deficient number, since it is larger than the sum of its proper divisors (175018480988).

200021121112 is a wasteful number, since it uses less digits than its factorization.

200021121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25002640145 (or 25002640141 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200021121112 its reverse (211121120002), we get a palindrome (411142241114).

The spelling of 200021121112 in words is "two hundred billion, twenty-one million, one hundred twenty-one thousand, one hundred twelve".