20211100111122 has 32 divisors (see below), whose sum is σ = 40489269194304. Its totient is φ = 6725863176000.

The previous prime is 20211100111121. The next prime is 20211100111141. The reversal of 20211100111122 is 22111100111202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20211100111121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9166372 + ... + 11155472.

It is an arithmetic number, because the mean of its divisors is an integer number (1265289662322).

Almost surely, 2^{20211100111122} is an apocalyptic number.

20211100111122 is an abundant number, since it is smaller than the sum of its proper divisors (20278169083182).

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

20211100111122 is a wasteful number, since it uses less digits than its factorization.

20211100111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991914.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20211100111122 its reverse (22111100111202), we get a palindrome (42322200222324).

The spelling of 20211100111122 in words is "twenty trillion, two hundred eleven billion, one hundred million, one hundred eleven thousand, one hundred twenty-two".