20220111 has 20 divisors (see below), whose sum is σ = 30500712. Its totient is φ = 13348368.

The previous prime is 20220103. The next prime is 20220119. The reversal of 20220111 is 11102202.

It is an interprime number because it is at equal distance from previous prime (20220103) and next prime (20220119).

It is not a de Polignac number, because 20220111 - 2³ = 20220103 is a prime.

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

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 20220093 and 20220102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220119) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7501 + ... + 9833.

Almost surely, 2^20220111 is an apocalyptic number.

20220111 is a deficient number, since it is larger than the sum of its proper divisors (10280601).

20220111 is a wasteful number, since it uses less digits than its factorization.

20220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2443 counting only the distinct ones).

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

The square root of 20220111 is about 4496.6777736458. The cubic root of 20220111 is about 272.4339193920.

Adding to 20220111 its reverse (11102202), we get a palindrome (31322313).

The spelling of 20220111 in words is "twenty million, two hundred twenty thousand, one hundred eleven".