20211111012222 has 96 divisors (see below), whose sum is σ = 48278599963776. Its totient is φ = 6072884928000.

The previous prime is 20211111012187. The next prime is 20211111012229. The reversal of 20211111012222 is 22221011111202.

It is a super-2 number, since 2×20211111012222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20211111012195 and 20211111012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211111012229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4132054 + ... + 7582617.

It is an arithmetic number, because the mean of its divisors is an integer number (502902082956).

Almost surely, 2^{20211111012222} is an apocalyptic number.

20211111012222 is an abundant number, since it is smaller than the sum of its proper divisors (28067488951554).

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

20211111012222 is a wasteful number, since it uses less digits than its factorization.

20211111012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11714866 (or 11714863 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20211111012222 its reverse (22221011111202), we get a palindrome (42432122123424).

The spelling of 20211111012222 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, twelve thousand, two hundred twenty-two".