2220209231 has 8 divisors (see below), whose sum is σ = 2431872720. Its totient is φ = 2017552768.

The previous prime is 2220209227. The next prime is 2220209249. The reversal of 2220209231 is 1329020222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220209231 - 2² = 2220209227 is a prime.

It is a super-2 number, since 2×2220209231² = 9858658058835222722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2220209197 and 2220209206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220209281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251241 + ... + 2252226.

It is an arithmetic number, because the mean of its divisors is an integer number (303984090).

Almost surely, 2^2220209231 is an apocalyptic number.

2220209231 is a deficient number, since it is larger than the sum of its proper divisors (211663489).

2220209231 is a wasteful number, since it uses less digits than its factorization.

2220209231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503513.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2220209231 is about 47119.0962455775. The cubic root of 2220209231 is about 1304.5617316431.

Adding to 2220209231 its reverse (1329020222), we get a palindrome (3549229453).

The spelling of 2220209231 in words is "two billion, two hundred twenty million, two hundred nine thousand, two hundred thirty-one".