2002022110021 has 2 divisors, whose sum is σ = 2002022110022. Its totient is φ = 2002022110020.

The previous prime is 2002022110013. The next prime is 2002022110031. The reversal of 2002022110021 is 1200112202002.

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., 1984475133796 + 17546976225 = 1408714^2 + 132465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002022110021 - 2³ = 2002022110013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002022109983 and 2002022110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002022110031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001011055010 + 1001011055011.

It is an arithmetic number, because the mean of its divisors is an integer number (1001011055011).

Almost surely, 2^{2002022110021} is an apocalyptic number.

It is an amenable number.

2002022110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002022110021 is an equidigital number, since it uses as much as digits as its factorization.

2002022110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2002022110021 its reverse (1200112202002), we get a palindrome (3202134312023).

The spelling of 2002022110021 in words is "two trillion, two billion, twenty-two million, one hundred ten thousand, twenty-one".