87022111 has 8 divisors (see below), whose sum is σ = 95719248. Its totient is φ = 79109800.

The previous prime is 87022063. The next prime is 87022123. The reversal of 87022111 is 11122078.

It is a de Polignac number, because none of the positive numbers 2^k-87022111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87022151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31360 + ... + 34021.

It is an arithmetic number, because the mean of its divisors is an integer number (11964906).

Almost surely, 2^87022111 is an apocalyptic number.

87022111 is a deficient number, since it is larger than the sum of its proper divisors (8697137).

87022111 is an equidigital number, since it uses as much as digits as its factorization.

87022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65414 (or 65392 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 87022111 is about 9328.5642518021. The cubic root of 87022111 is about 443.1422972633.

Adding to 87022111 its reverse (11122078), we get a palindrome (98144189).

The spelling of 87022111 in words is "eighty-seven million, twenty-two thousand, one hundred eleven".