20211012222 has 16 divisors (see below), whose sum is σ = 40448071440. Its totient is φ = 6732662912.

The previous prime is 20211012191. The next prime is 20211012259. The reversal of 20211012222 is 22221011202.

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, 1075197 + ... + 1093832.

It is an arithmetic number, because the mean of its divisors is an integer number (2528004465).

Almost surely, 2^20211012222 is an apocalyptic number.

20211012222 is an abundant number, since it is smaller than the sum of its proper divisors (20237059218).

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

20211012222 is a wasteful number, since it uses less digits than its factorization.

20211012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170587.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20211012222 its reverse (22221011202), we get a palindrome (42432023424).

The spelling of 20211012222 in words is "twenty billion, two hundred eleven million, twelve thousand, two hundred twenty-two".