2220021091 has 8 divisors (see below), whose sum is σ = 2229519168. Its totient is φ = 2210544000.

The previous prime is 2220021061. The next prime is 2220021101. The reversal of 2220021091 is 1901200222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220021091 - 2⁵ = 2220021059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220021061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228411 + ... + 237931.

It is an arithmetic number, because the mean of its divisors is an integer number (278689896).

Almost surely, 2^2220021091 is an apocalyptic number.

2220021091 is a deficient number, since it is larger than the sum of its proper divisors (9498077).

2220021091 is an equidigital number, since it uses as much as digits as its factorization.

2220021091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10493.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2220021091 is about 47117.0997728001. The cubic root of 2220021091 is about 1304.5248811856.

The spelling of 2220021091 in words is "two billion, two hundred twenty million, twenty-one thousand, ninety-one".