2019802221 has 12 divisors (see below), whose sum is σ = 2917911360. Its totient is φ = 1346341320.

The previous prime is 2019802219. The next prime is 2019802231. The reversal of 2019802221 is 1222089102.

It is not a de Polignac number, because 2019802221 - 2¹ = 2019802219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019802231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80386 + ... + 102476.

It is an arithmetic number, because the mean of its divisors is an integer number (243159280).

Almost surely, 2^2019802221 is an apocalyptic number.

It is an amenable number.

2019802221 is a deficient number, since it is larger than the sum of its proper divisors (898109139).

2019802221 is a wasteful number, since it uses less digits than its factorization.

2019802221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32256 (or 32253 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2019802221 is about 44942.2097921319. The cubic root of 2019802221 is about 1264.0656071155.

The spelling of 2019802221 in words is "two billion, nineteen million, eight hundred two thousand, two hundred twenty-one".