221200420233 has 16 divisors (see below), whose sum is σ = 317637936000. Its totient is φ = 136116127104.

The previous prime is 221200420127. The next prime is 221200420247. The reversal of 221200420233 is 332024002122.

It is not a de Polignac number, because 221200420233 - 2⁸ = 221200419977 is a prime.

It is a super-2 number, since 2×221200420233² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221200420283) 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, 649660 + ... + 929762.

It is an arithmetic number, because the mean of its divisors is an integer number (19852371000).

Almost surely, 2^221200420233 is an apocalyptic number.

It is an amenable number.

221200420233 is a deficient number, since it is larger than the sum of its proper divisors (96437515767).

221200420233 is a wasteful number, since it uses less digits than its factorization.

221200420233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300368.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 221200420233 its reverse (332024002122), we get a palindrome (553224422355).

The spelling of 221200420233 in words is "two hundred twenty-one billion, two hundred million, four hundred twenty thousand, two hundred thirty-three".