2001222101112 has 64 divisors (see below), whose sum is σ = 5395505556000. Its totient is φ = 614892086784.

The previous prime is 2001222101101. The next prime is 2001222101143. The reversal of 2001222101112 is 2111012221002.

It is a junction number, because it is equal to n+sod(n) for n = 2001222101091 and 2001222101100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4302187 + ... + 4744602.

Almost surely, 2^{2001222101112} is an apocalyptic number.

It is an amenable number.

2001222101112 is an abundant number, since it is smaller than the sum of its proper divisors (3394283454888).

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

2001222101112 is a wasteful number, since it uses less digits than its factorization.

2001222101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9047520 (or 9047516 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2001222101112 its reverse (2111012221002), we get a palindrome (4112234322114).

The spelling of 2001222101112 in words is "two trillion, one billion, two hundred twenty-two million, one hundred one thousand, one hundred twelve".