2091821122 has 16 divisors (see below), whose sum is σ = 3224656440. Its totient is φ = 1016972928.

The previous prime is 2091821111. The next prime is 2091821183. The reversal of 2091821122 is 2211281902.

It can be written as a sum of positive squares in 4 ways, for example, as 1986574041 + 105247081 = 44571^2 + 10259^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115038 + ... + 131974.

Almost surely, 2^2091821122 is an apocalyptic number.

2091821122 is a deficient number, since it is larger than the sum of its proper divisors (1132835318).

2091821122 is a wasteful number, since it uses less digits than its factorization.

2091821122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18645.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2091821122 is about 45736.4310151109. The cubic root of 2091821122 is about 1278.9145098164.

The spelling of 2091821122 in words is "two billion, ninety-one million, eight hundred twenty-one thousand, one hundred twenty-two".