1321012 has 24 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 514560.

The previous prime is 1321007. The next prime is 1321031. The reversal of 1321012 is 2101231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837 + ... + 2452.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

2^1321012 is an apocalyptic number.

It is an amenable number.

1321012 is an abundant number, since it is smaller than the sum of its proper divisors (1561868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321012 is a wasteful number, since it uses less digits than its factorization.

1321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1321012 is about 1149.3528613964. The cubic root of 1321012 is about 109.7241573433.

Adding to 1321012 its reverse (2101231), we get a palindrome (3422243).

It can be divided in two parts, 13 and 21012, that added together give a square (21025 = 145²).

The spelling of 1321012 in words is "one million, three hundred twenty-one thousand, twelve".