2002219991 has 2 divisors, whose sum is σ = 2002219992. Its totient is φ = 2002219990.

The previous prime is 2002219969. The next prime is 2002220029. The reversal of 2002219991 is 1999122002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2002219991 - 2⁶ = 2002219927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002213991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001109995 + 1001109996.

It is an arithmetic number, because the mean of its divisors is an integer number (1001109996).

Almost surely, 2^2002219991 is an apocalyptic number.

2002219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002219991 is an equidigital number, since it uses as much as digits as its factorization.

2002219991 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 35.

The square root of 2002219991 is about 44746.1729201504. The cubic root of 2002219991 is about 1260.3870464179.

The spelling of 2002219991 in words is "two billion, two million, two hundred nineteen thousand, nine hundred ninety-one".