1012111 has 4 divisors (see below), whose sum is σ = 1065400. Its totient is φ = 958824.

The previous prime is 1012103. The next prime is 1012133. The reversal of 1012111 is 1112101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112101 = 223 ⋅4987.

It is a cyclic number.

It is not a de Polignac number, because 1012111 - 2³ = 1012103 is a prime.

It is a Duffinian number.

1012111 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1012094 and 1012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26616 + ... + 26653.

It is an arithmetic number, because the mean of its divisors is an integer number (266350).

2^1012111 is an apocalyptic number.

1012111 is a deficient number, since it is larger than the sum of its proper divisors (53289).

1012111 is an equidigital number, since it uses as much as digits as its factorization.

1012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53288.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1012111 is about 1006.0372756514. The cubic root of 1012111 is about 100.4020811408.

Adding to 1012111 its reverse (1112101), we get a palindrome (2124212).

Multiplying 1012111 by its reverse (1112101), we get a palindrome (1125569655211).

It can be divided in two parts, 10 and 12111, that added together give a palindrome (12121).

The spelling of 1012111 in words is "one million, twelve thousand, one hundred eleven".