82261111 has 2 divisors, whose sum is σ = 82261112. Its totient is φ = 82261110.

The previous prime is 82261099. The next prime is 82261117. The reversal of 82261111 is 11116228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82261111 - 2⁹ = 82260599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82261117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41130555 + 41130556.

It is an arithmetic number, because the mean of its divisors is an integer number (41130556).

Almost surely, 2^82261111 is an apocalyptic number.

82261111 is a deficient number, since it is larger than the sum of its proper divisors (1).

82261111 is an equidigital number, since it uses as much as digits as its factorization.

82261111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 22.

The square root of 82261111 is about 9069.7911221814. The cubic root of 82261111 is about 434.9087949008.

Adding to 82261111 its reverse (11116228), we get a palindrome (93377339).

The spelling of 82261111 in words is "eighty-two million, two hundred sixty-one thousand, one hundred eleven".