2002112212021 has 2 divisors, whose sum is σ = 2002112212022. Its totient is φ = 2002112212020.

The previous prime is 2002112212019. The next prime is 2002112212039. The reversal of 2002112212021 is 1202122112002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2001913712100 + 198499921 = 1414890^2 + 14089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002112212021 - 2¹ = 2002112212019 is a prime.

Together with 2002112212019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2002112211986 and 2002112212004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002112218021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001056106010 + 1001056106011.

It is an arithmetic number, because the mean of its divisors is an integer number (1001056106011).

Almost surely, 2^{2002112212021} is an apocalyptic number.

It is an amenable number.

2002112212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002112212021 is an equidigital number, since it uses as much as digits as its factorization.

2002112212021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2002112212021 its reverse (1202122112002), we get a palindrome (3204234324023).

The spelling of 2002112212021 in words is "two trillion, two billion, one hundred twelve million, two hundred twelve thousand, twenty-one".