20221100111 has 4 divisors (see below), whose sum is σ = 20230782000. Its totient is φ = 20211418224.

The previous prime is 20221100051. The next prime is 20221100153. The reversal of 20221100111 is 11100112202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20221100111 - 2⁶ = 20221100047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221100092 and 20221100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221100161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4837811 + ... + 4841988.

It is an arithmetic number, because the mean of its divisors is an integer number (5057695500).

Almost surely, 2^20221100111 is an apocalyptic number.

20221100111 is a deficient number, since it is larger than the sum of its proper divisors (9681889).

20221100111 is an equidigital number, since it uses as much as digits as its factorization.

20221100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681888.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20221100111 its reverse (11100112202), we get a palindrome (31321212313).

The spelling of 20221100111 in words is "twenty billion, two hundred twenty-one million, one hundred thousand, one hundred eleven".