22011220201 has 4 divisors (see below), whose sum is σ = 22224921472. Its totient is φ = 21797518932.

The previous prime is 22011220199. The next prime is 22011220219. The reversal of 22011220201 is 10202211022.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10202211022 = 2 ⋅5101105511.

It is a cyclic number.

It is not a de Polignac number, because 22011220201 - 2¹ = 22011220199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011220241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106850481 + ... + 106850686.

It is an arithmetic number, because the mean of its divisors is an integer number (5556230368).

Almost surely, 2^22011220201 is an apocalyptic number.

It is an amenable number.

22011220201 is a deficient number, since it is larger than the sum of its proper divisors (213701271).

22011220201 is a wasteful number, since it uses less digits than its factorization.

22011220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213701270.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22011220201 its reverse (10202211022), we get a palindrome (32213431223).

The spelling of 22011220201 in words is "twenty-two billion, eleven million, two hundred twenty thousand, two hundred one".