1212016 has 20 divisors (see below), whose sum is σ = 2529352. Its totient is φ = 559296.

The previous prime is 1212011. The next prime is 1212017. The reversal of 1212016 is 6102121.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1211987 and 1212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212011) 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 3 ways as a sum of consecutive naturals, for example, 2706 + ... + 3121.

2^1212016 is an apocalyptic number.

1212016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1212016 is an abundant number, since it is smaller than the sum of its proper divisors (1317336).

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

1212016 is a wasteful number, since it uses less digits than its factorization.

1212016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848 (or 5842 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1212016 is about 1100.9159822620. The cubic root of 1212016 is about 106.6193713938.

Adding to 1212016 its reverse (6102121), we get a palindrome (7314137).

The spelling of 1212016 in words is "one million, two hundred twelve thousand, sixteen".