22122122201 has 4 divisors (see below), whose sum is σ = 22484780004. Its totient is φ = 21759464400.

The previous prime is 22122122159. The next prime is 22122122203. The reversal of 22122122201 is 10222122122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2724318025 + 19397804176 = 52195^2 + 139276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122122201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22122122201.

It is not an unprimeable number, because it can be changed into a prime (22122122203) 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, 181328810 + ... + 181328931.

It is an arithmetic number, because the mean of its divisors is an integer number (5621195001).

Almost surely, 2^22122122201 is an apocalyptic number.

It is an amenable number.

22122122201 is a deficient number, since it is larger than the sum of its proper divisors (362657803).

22122122201 is an equidigital number, since it uses as much as digits as its factorization.

22122122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362657802.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22122122201 its reverse (10222122122), we get a palindrome (32344244323).

The spelling of 22122122201 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred one".