20012223222 has 12 divisors (see below), whose sum is σ = 43359817020. Its totient is φ = 6670741068.

The previous prime is 20012223221. The next prime is 20012223241. The reversal of 20012223222 is 22232221002.

It is a super-2 number, since 2×20012223222² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1111790179 = 20012223222 / (2 + 0 + 0 + 1 + 2 + 2 + 2 + 3 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20012223195 and 20012223204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012223221) 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 5 ways as a sum of consecutive naturals, for example, 555895072 + ... + 555895107.

It is an arithmetic number, because the mean of its divisors is an integer number (3613318085).

Almost surely, 2^20012223222 is an apocalyptic number.

20012223222 is an abundant number, since it is smaller than the sum of its proper divisors (23347593798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012223222 is a wasteful number, since it uses less digits than its factorization.

20012223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111790187 (or 1111790184 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20012223222 its reverse (22232221002), we get a palindrome (42244444224).

The spelling of 20012223222 in words is "twenty billion, twelve million, two hundred twenty-three thousand, two hundred twenty-two".