21322222201 has 4 divisors (see below), whose sum is σ = 24368253952. Its totient is φ = 18276190452.

The previous prime is 21322222111. The next prime is 21322222217. The reversal of 21322222201 is 10222222312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21322222201 - 2³¹ = 19174738553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21322222291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523015865 + ... + 1523015878.

It is an arithmetic number, because the mean of its divisors is an integer number (6092063488).

Almost surely, 2^21322222201 is an apocalyptic number.

It is an amenable number.

21322222201 is a deficient number, since it is larger than the sum of its proper divisors (3046031751).

21322222201 is an equidigital number, since it uses as much as digits as its factorization.

21322222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046031750.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21322222201 its reverse (10222222312), we get a palindrome (31544444513).

The spelling of 21322222201 in words is "twenty-one billion, three hundred twenty-two million, two hundred twenty-two thousand, two hundred one".