222020091 has 12 divisors (see below), whose sum is σ = 329363632. Its totient is φ = 144012816.

The previous prime is 222020089. The next prime is 222020093. The reversal of 222020091 is 190020222.

It is an interprime number because it is at equal distance from previous prime (222020089) and next prime (222020093).

It is not a de Polignac number, because 222020091 - 2¹ = 222020089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222020093) 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, 333031 + ... + 333696.

Almost surely, 2^222020091 is an apocalyptic number.

222020091 is a deficient number, since it is larger than the sum of its proper divisors (107343541).

222020091 is a wasteful number, since it uses less digits than its factorization.

222020091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666770 (or 666767 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 222020091 is about 14900.3386203133. The cubic root of 222020091 is about 605.5231601644.

The spelling of 222020091 in words is "two hundred twenty-two million, twenty thousand, ninety-one".