20110222001 has 4 divisors (see below), whose sum is σ = 20110519104. Its totient is φ = 20109924900.

The previous prime is 20110221977. The next prime is 20110222007. The reversal of 20110222001 is 10022201102.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20110222001 - 2¹⁴ = 20110205617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20110222007) 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 3 ways as a sum of consecutive naturals, for example, 7916 + ... + 200706.

It is an arithmetic number, because the mean of its divisors is an integer number (5027629776).

Almost surely, 2^20110222001 is an apocalyptic number.

It is an amenable number.

20110222001 is a deficient number, since it is larger than the sum of its proper divisors (297103).

20110222001 is a wasteful number, since it uses less digits than its factorization.

20110222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297102.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20110222001 its reverse (10022201102), we get a palindrome (30132423103).

The spelling of 20110222001 in words is "twenty billion, one hundred ten million, two hundred twenty-two thousand, one".