2112002001221 has 16 divisors (see below), whose sum is σ = 2424471308160. Its totient is φ = 1802225963520.

The previous prime is 2112002001167. The next prime is 2112002001257. The reversal of 2112002001221 is 1221002002112.

It is a cyclic number.

It is not a de Polignac number, because 2112002001221 - 2⁶ = 2112002001157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112002001196 and 2112002001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112002001721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5389625 + ... + 5768193.

It is an arithmetic number, because the mean of its divisors is an integer number (151529456760).

Almost surely, 2^{2112002001221} is an apocalyptic number.

It is an amenable number.

2112002001221 is a deficient number, since it is larger than the sum of its proper divisors (312469306939).

2112002001221 is a wasteful number, since it uses less digits than its factorization.

2112002001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382124.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112002001221 its reverse (1221002002112), we get a palindrome (3333004003333).

The spelling of 2112002001221 in words is "two trillion, one hundred twelve billion, two million, one thousand, two hundred twenty-one".