2112002022121 has 8 divisors (see below), whose sum is σ = 2210009257224. Its totient is φ = 2016148792320.

The previous prime is 2112002022101. The next prime is 2112002022127. The reversal of 2112002022121 is 1212202002112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 332019116521 + 1779982905600 = 576211^2 + 1334160^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2112002022121 - 2⁵ = 2112002022089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112002022095 and 2112002022104.

It is not an unprimeable number, because it can be changed into a prime (2112002022127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538499320 + ... + 538503241.

It is an arithmetic number, because the mean of its divisors is an integer number (276251157153).

Almost surely, 2^{2112002022121} is an apocalyptic number.

It is an amenable number.

2112002022121 is a deficient number, since it is larger than the sum of its proper divisors (98007235103).

2112002022121 is a wasteful number, since it uses less digits than its factorization.

2112002022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077002651.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2112002022121 its reverse (1212202002112), we get a palindrome (3324204024233).

The spelling of 2112002022121 in words is "two trillion, one hundred twelve billion, two million, twenty-two thousand, one hundred twenty-one".