2220209197 has 16 divisors (see below), whose sum is σ = 2376831600. Its totient is φ = 2066563072.

The previous prime is 2220209191. The next prime is 2220209213. The reversal of 2220209197 is 7919020222.

It can be written as a sum of positive squares in 8 ways, for example, as 4247721 + 2215961476 = 2061^2 + 47074^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220209197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220209191) 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, 1138179 + ... + 1140127.

It is an arithmetic number, because the mean of its divisors is an integer number (148551975).

Almost surely, 2^2220209197 is an apocalyptic number.

It is an amenable number.

2220209197 is a deficient number, since it is larger than the sum of its proper divisors (156622403).

2220209197 is a wasteful number, since it uses less digits than its factorization.

2220209197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 2220209197 is about 47119.0958847896. The cubic root of 2220209197 is about 1304.5617249838.

The spelling of 2220209197 in words is "two billion, two hundred twenty million, two hundred nine thousand, one hundred ninety-seven".