1002111 has 8 divisors (see below), whose sum is σ = 1457664. Its totient is φ = 607320.

The previous prime is 1002109. The next prime is 1002121. The reversal of 1002111 is 1112001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1002111 - 2¹ = 1002109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15151 + ... + 15216.

It is an arithmetic number, because the mean of its divisors is an integer number (182208).

2^1002111 is an apocalyptic number.

1002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002111 is a deficient number, since it is larger than the sum of its proper divisors (455553).

1002111 is a wasteful number, since it uses less digits than its factorization.

1002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30381.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1002111 is about 1001.0549435471. The cubic root of 1002111 is about 100.0703172100.

Adding to 1002111 its reverse (1112001), we get a palindrome (2114112).

Multiplying 1002111 by its reverse (1112001), we get a palindrome (1114348434111).

It can be divided in two parts, 100 and 2111, that added together give a triangular number (2211 = T₆₆).

The spelling of 1002111 in words is "one million, two thousand, one hundred eleven".