83020111 has 2 divisors, whose sum is σ = 83020112. Its totient is φ = 83020110.

The previous prime is 83020099. The next prime is 83020141. The reversal of 83020111 is 11102038.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83020111 - 2¹⁵ = 82987343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83020141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41510055 + 41510056.

It is an arithmetic number, because the mean of its divisors is an integer number (41510056).

Almost surely, 2^83020111 is an apocalyptic number.

83020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

83020111 is an equidigital number, since it uses as much as digits as its factorization.

83020111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 83020111 is about 9111.5372468097. The cubic root of 83020111 is about 436.2422954663.

Adding to 83020111 its reverse (11102038), we get a palindrome (94122149).

The spelling of 83020111 in words is "eighty-three million, twenty thousand, one hundred eleven".