22020111 has 12 divisors (see below), whose sum is σ = 32484192. Its totient is φ = 14367456.

The previous prime is 22020091. The next prime is 22020127. The reversal of 22020111 is 11102022.

It is not a de Polignac number, because 22020111 - 2⁵ = 22020079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 22020093 and 22020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25606 + ... + 26451.

It is an arithmetic number, because the mean of its divisors is an integer number (2707016).

Almost surely, 2^22020111 is an apocalyptic number.

22020111 is a deficient number, since it is larger than the sum of its proper divisors (10464081).

22020111 is a wasteful number, since it uses less digits than its factorization.

22020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52110 (or 52107 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 22020111 is about 4692.5591099101. The cubic root of 22020111 is about 280.2892885968.

Adding to 22020111 its reverse (11102022), we get a palindrome (33122133).

The spelling of 22020111 in words is "twenty-two million, twenty thousand, one hundred eleven".