2091217222 has 4 divisors (see below), whose sum is σ = 3136825836. Its totient is φ = 1045608610.

The previous prime is 2091217213. The next prime is 2091217223. The reversal of 2091217222 is 2227121902.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091217223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522804304 + ... + 522804307.

It is an arithmetic number, because the mean of its divisors is an integer number (784206459).

Almost surely, 2^2091217222 is an apocalyptic number.

2091217222 is a deficient number, since it is larger than the sum of its proper divisors (1045608614).

2091217222 is a wasteful number, since it uses less digits than its factorization.

2091217222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045608613.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2091217222 is about 45729.8285804791. The cubic root of 2091217222 is about 1278.7914255495.

The spelling of 2091217222 in words is "two billion, ninety-one million, two hundred seventeen thousand, two hundred twenty-two".