1213012 has 12 divisors (see below), whose sum is σ = 2196180. Its totient is φ = 585536.

The previous prime is 1213007. The next prime is 1213019. The reversal of 1213012 is 2103121.

It can be written as a sum of positive squares in 2 ways, for example, as 894916 + 318096 = 946^2 + 564^2 .

It is a super-2 number, since 2×1213012² = 2942796224288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5113 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (183015).

2^1213012 is an apocalyptic number.

It is an amenable number.

1213012 is a deficient number, since it is larger than the sum of its proper divisors (983168).

1213012 is a wasteful number, since it uses less digits than its factorization.

1213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10490 (or 10488 counting only the distinct ones).

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

The square root of 1213012 is about 1101.3682399634. The cubic root of 1213012 is about 106.6485689782.

Adding to 1213012 its reverse (2103121), we get a palindrome (3316133).

The spelling of 1213012 in words is "one million, two hundred thirteen thousand, twelve".