220210191 has 16 divisors (see below), whose sum is σ = 326937600. Its totient is φ = 146491704.

The previous prime is 220210187. The next prime is 220210213. The reversal of 220210191 is 191012022.

It is not a de Polignac number, because 220210191 - 2² = 220210187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220210141) 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, 4420 + ... + 21446.

It is an arithmetic number, because the mean of its divisors is an integer number (20433600).

Almost surely, 2^220210191 is an apocalyptic number.

220210191 is a deficient number, since it is larger than the sum of its proper divisors (106727409).

220210191 is a wasteful number, since it uses less digits than its factorization.

220210191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17515 (or 17509 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 220210191 is about 14839.4808197592. The cubic root of 220210191 is about 603.8732675278.

The spelling of 220210191 in words is "two hundred twenty million, two hundred ten thousand, one hundred ninety-one".