85107121 has 24 divisors (see below), whose sum is σ = 98092512. Its totient is φ = 73209600.

The previous prime is 85107101. The next prime is 85107131. The reversal of 85107121 is 12170158.

It is not a de Polignac number, because 85107121 - 2¹⁹ = 84582833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85107101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877345 + ... + 877441.

It is an arithmetic number, because the mean of its divisors is an integer number (4087188).

Almost surely, 2^85107121 is an apocalyptic number.

It is an amenable number.

85107121 is a deficient number, since it is larger than the sum of its proper divisors (12985391).

85107121 is a wasteful number, since it uses less digits than its factorization.

85107121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 85107121 is about 9225.3520800022. The cubic root of 85107121 is about 439.8675927350.

Adding to 85107121 its reverse (12170158), we get a palindrome (97277279).

The spelling of 85107121 in words is "eighty-five million, one hundred seven thousand, one hundred twenty-one".