20211102220122 has 32 divisors (see below), whose sum is σ = 48996611444160. Its totient is φ = 6124576430160.

The previous prime is 20211102220117. The next prime is 20211102220123. The reversal of 20211102220122 is 22102220111202.

It is a happy number.

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 = 20211102220095 and 20211102220104.

It is not an unprimeable number, because it can be changed into a prime (20211102220123) 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 15 ways as a sum of consecutive naturals, for example, 17012711713 + ... + 17012712900.

It is an arithmetic number, because the mean of its divisors is an integer number (1531144107630).

Almost surely, 2^{20211102220122} is an apocalyptic number.

20211102220122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20211102220122 is an abundant number, since it is smaller than the sum of its proper divisors (28785509224038).

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

20211102220122 is a wasteful number, since it uses less digits than its factorization.

20211102220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34025424635 (or 34025424629 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20211102220122 its reverse (22102220111202), we get a palindrome (42313322331324).

The spelling of 20211102220122 in words is "twenty trillion, two hundred eleven billion, one hundred two million, two hundred twenty thousand, one hundred twenty-two".