20211100222 has 16 divisors (see below), whose sum is σ = 30881916000. Its totient is φ = 9918865152.

The previous prime is 20211100207. The next prime is 20211100243. The reversal of 20211100222 is 22200111202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 410847 + ... + 457402.

It is an arithmetic number, because the mean of its divisors is an integer number (1930119750).

Almost surely, 2^20211100222 is an apocalyptic number.

20211100222 is a deficient number, since it is larger than the sum of its proper divisors (10670815778).

20211100222 is a wasteful number, since it uses less digits than its factorization.

20211100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868467.

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

Adding to 20211100222 its reverse (22200111202), we get a palindrome (42411211424).

The spelling of 20211100222 in words is "twenty billion, two hundred eleven million, one hundred thousand, two hundred twenty-two".