8020111 has 8 divisors (see below), whose sum is σ = 8830800. Its totient is φ = 7223040.

The previous prime is 8020069. The next prime is 8020121. The reversal of 8020111 is 1110208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8020111 - 2⁷ = 8019983 is a prime.

8020111 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 8020091 and 8020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8020121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2146 + ... + 4543.

It is an arithmetic number, because the mean of its divisors is an integer number (1103850).

Almost surely, 2^8020111 is an apocalyptic number.

8020111 is the 1267-th centered decagonal number.

8020111 is a deficient number, since it is larger than the sum of its proper divisors (810689).

8020111 is a wasteful number, since it uses less digits than its factorization.

8020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 8020111 is about 2831.9800493648. The cubic root of 8020111 is about 200.1674514276.

Adding to 8020111 its reverse (1110208), we get a palindrome (9130319).

Subtracting from 8020111 its reverse (1110208), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 8020111 in words is "eight million, twenty thousand, one hundred eleven".