20002121011112 has 16 divisors (see below), whose sum is σ = 38797217478900. Its totient is φ = 9656196350080.

The previous prime is 20002121011097. The next prime is 20002121011133. The reversal of 20002121011112 is 21111012120002.

It can be written as a sum of positive squares in 2 ways, for example, as 18952492074916 + 1049628936196 = 4353446^2 + 1024514^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43108019189 + ... + 43108019652.

Almost surely, 2^{20002121011112} is an apocalyptic number.

It is an amenable number.

20002121011112 is a deficient number, since it is larger than the sum of its proper divisors (18795096467788).

20002121011112 is a wasteful number, since it uses less digits than its factorization.

20002121011112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86216038876 (or 86216038872 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20002121011112 its reverse (21111012120002), we get a palindrome (41113133131114).

The spelling of 20002121011112 in words is "twenty trillion, two billion, one hundred twenty-one million, eleven thousand, one hundred twelve".