20021110222 has 24 divisors (see below), whose sum is σ = 31993882200. Its totient is φ = 9394608000.

The previous prime is 20021110177. The next prime is 20021110223. The reversal of 20021110222 is 22201112002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021110223) 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 11 ways as a sum of consecutive naturals, for example, 152097 + ... + 251347.

It is an arithmetic number, because the mean of its divisors is an integer number (1333078425).

Almost surely, 2^20021110222 is an apocalyptic number.

20021110222 is a deficient number, since it is larger than the sum of its proper divisors (11972771978).

20021110222 is a wasteful number, since it uses less digits than its factorization.

20021110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99636 (or 99619 counting only the distinct ones).

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

Adding to 20021110222 its reverse (22201112002), we get a palindrome (42222222224).

The spelling of 20021110222 in words is "twenty billion, twenty-one million, one hundred ten thousand, two hundred twenty-two".