2002021999 has 2 divisors, whose sum is σ = 2002022000. Its totient is φ = 2002021998.

The previous prime is 2002021997. The next prime is 2002022023. The reversal of 2002021999 is 9991202002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002021999 - 2¹ = 2002021997 is a prime.

Together with 2002021997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002021997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001010999 + 1001011000.

It is an arithmetic number, because the mean of its divisors is an integer number (1001011000).

Almost surely, 2^2002021999 is an apocalyptic number.

2002021999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002021999 is an equidigital number, since it uses as much as digits as its factorization.

2002021999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 2002021999 is about 44743.9604751300. The cubic root of 2002021999 is about 1260.3455000712.

The spelling of 2002021999 in words is "two billion, two million, twenty-one thousand, nine hundred ninety-nine".