2196895221 has 6 divisors (see below), whose sum is σ = 3173293110. Its totient is φ = 1464596808.

The previous prime is 2196895219. The next prime is 2196895223. The reversal of 2196895221 is 1225986912.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2196895219) and next prime (2196895223).

It can be written as a sum of positive squares in only one way, i.e., 2186591121 + 10304100 = 46761^2 + 3210^2 .

It is not a de Polignac number, because 2196895221 - 2¹ = 2196895219 is a prime.

It is a super-2 number, since 2×2196895221² = 9652697224105277682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196895223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122049726 + ... + 122049743.

It is an arithmetic number, because the mean of its divisors is an integer number (528882185).

Almost surely, 2^2196895221 is an apocalyptic number.

It is an amenable number.

2196895221 is a deficient number, since it is larger than the sum of its proper divisors (976397889).

2196895221 is a wasteful number, since it uses less digits than its factorization.

2196895221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244099475 (or 244099472 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 2196895221 is about 46871.0488574770. The cubic root of 2196895221 is about 1299.9793332020.

The spelling of 2196895221 in words is "two billion, one hundred ninety-six million, eight hundred ninety-five thousand, two hundred twenty-one".