20001222022 has 4 divisors (see below), whose sum is σ = 30001833036. Its totient is φ = 10000611010.

The previous prime is 20001222013. The next prime is 20001222047. The reversal of 20001222022 is 22022210002.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 20001221993 and 20001222011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000305504 + ... + 5000305507.

It is an arithmetic number, because the mean of its divisors is an integer number (7500458259).

Almost surely, 2^20001222022 is an apocalyptic number.

20001222022 is a deficient number, since it is larger than the sum of its proper divisors (10000611014).

20001222022 is a wasteful number, since it uses less digits than its factorization.

20001222022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000611013.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20001222022 its reverse (22022210002), we get a palindrome (42023432024).

The spelling of 20001222022 in words is "twenty billion, one million, two hundred twenty-two thousand, twenty-two".