2231200221 has 16 divisors (see below), whose sum is σ = 2999581248. Its totient is φ = 1475164800.

The previous prime is 2231200217. The next prime is 2231200249. The reversal of 2231200221 is 1220021322.

It is a happy number.

It is not a de Polignac number, because 2231200221 - 2² = 2231200217 is a prime.

It is a super-3 number, since 3×2231200221³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2231200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231200291) 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 15 ways as a sum of consecutive naturals, for example, 565626 + ... + 569556.

It is an arithmetic number, because the mean of its divisors is an integer number (187473828).

Almost surely, 2^2231200221 is an apocalyptic number.

It is an amenable number.

2231200221 is a deficient number, since it is larger than the sum of its proper divisors (768381027).

2231200221 is a wasteful number, since it uses less digits than its factorization.

2231200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2231200221 is about 47235.5821494771. The cubic root of 2231200221 is about 1306.7109028637.

Adding to 2231200221 its reverse (1220021322), we get a palindrome (3451221543).

The spelling of 2231200221 in words is "two billion, two hundred thirty-one million, two hundred thousand, two hundred twenty-one".