21222333201 has 8 divisors (see below), whose sum is σ = 29061213184. Its totient is φ = 13765837680.

The previous prime is 21222333199. The next prime is 21222333227. The reversal of 21222333201 is 10233322212.

It is a happy number.

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

It is not a de Polignac number, because 21222333201 - 2¹ = 21222333199 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21222333101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95595985 + ... + 95596206.

It is an arithmetic number, because the mean of its divisors is an integer number (3632651648).

Almost surely, 2^21222333201 is an apocalyptic number.

It is an amenable number.

21222333201 is a deficient number, since it is larger than the sum of its proper divisors (7838879983).

21222333201 is a wasteful number, since it uses less digits than its factorization.

21222333201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191192231.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21222333201 its reverse (10233322212), we get a palindrome (31455655413).

It can be divided in two parts, 21 and 222333201, that added together give a palindrome (222333222).

The spelling of 21222333201 in words is "twenty-one billion, two hundred twenty-two million, three hundred thirty-three thousand, two hundred one".