22001222201 has 4 divisors (see below), whose sum is σ = 25144253952. Its totient is φ = 18858190452.

The previous prime is 22001222179. The next prime is 22001222209. The reversal of 22001222201 is 10222210022.

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 a de Polignac number, because none of the positive numbers 2^k-22001222201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22001222209) 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, 1571515865 + ... + 1571515878.

It is an arithmetic number, because the mean of its divisors is an integer number (6286063488).

Almost surely, 2^22001222201 is an apocalyptic number.

It is an amenable number.

22001222201 is a deficient number, since it is larger than the sum of its proper divisors (3143031751).

22001222201 is an equidigital number, since it uses as much as digits as its factorization.

22001222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143031750.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22001222201 its reverse (10222210022), we get a palindrome (32223432223).

The spelling of 22001222201 in words is "twenty-two billion, one million, two hundred twenty-two thousand, two hundred one".