1013121 has 16 divisors (see below), whose sum is σ = 1516800. Its totient is φ = 668304.

The previous prime is 1013063. The next prime is 1013143. The reversal of 1013121 is 1213101.

It is not a de Polignac number, because 1013121 - 2⁷ = 1012993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013321) 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 15 ways as a sum of consecutive naturals, for example, 4120 + ... + 4358.

It is an arithmetic number, because the mean of its divisors is an integer number (94800).

2^1013121 is an apocalyptic number.

It is an amenable number.

1013121 is a deficient number, since it is larger than the sum of its proper divisors (503679).

1013121 is a wasteful number, since it uses less digits than its factorization.

1013121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1013121 is about 1006.5391199551. The cubic root of 1013121 is about 100.4354675938.

Adding to 1013121 its reverse (1213101), we get a palindrome (2226222).

It can be divided in two parts, 10 and 13121, that added together give a palindrome (13131).

The spelling of 1013121 in words is "one million, thirteen thousand, one hundred twenty-one".