12021696 has 84 divisors (see below), whose sum is σ = 35780472. Its totient is φ = 4002048.

The previous prime is 12021683. The next prime is 12021701. The reversal of 12021696 is 69612021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15166 + ... + 15938.

It is an arithmetic number, because the mean of its divisors is an integer number (425958).

Almost surely, 2^12021696 is an apocalyptic number.

12021696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17890236).

12021696 is an abundant number, since it is smaller than the sum of its proper divisors (23758776).

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

12021696 is an frugal number, since it uses more digits than its factorization.

12021696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12021696 is about 3467.2317488163. The cubic root of 12021696 is about 229.0807416638.

The spelling of 12021696 in words is "twelve million, twenty-one thousand, six hundred ninety-six".