2121221095 has 16 divisors (see below), whose sum is σ = 3009418560. Its totient is φ = 1404393984.

The previous prime is 2121221077. The next prime is 2121221099. The reversal of 2121221095 is 5901221212.

It is not a de Polignac number, because 2121221095 - 2²⁵ = 2087666663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121221099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1043922 + ... + 1045951.

It is an arithmetic number, because the mean of its divisors is an integer number (188088660).

Almost surely, 2^2121221095 is an apocalyptic number.

2121221095 is a deficient number, since it is larger than the sum of its proper divisors (888197465).

2121221095 is a wasteful number, since it uses less digits than its factorization.

2121221095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089914.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 2121221095 is about 46056.7160683434. The cubic root of 2121221095 is about 1284.8782546015.

The spelling of 2121221095 in words is "two billion, one hundred twenty-one million, two hundred twenty-one thousand, ninety-five".