12021036 has 48 divisors (see below), whose sum is σ = 29338848. Its totient is φ = 3827200.

The previous prime is 12021029. The next prime is 12021043. The reversal of 12021036 is 63012021.

It is an interprime number because it is at equal distance from previous prime (12021029) and next prime (12021043).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25846 + ... + 26306.

It is an arithmetic number, because the mean of its divisors is an integer number (611226).

Almost surely, 2^12021036 is an apocalyptic number.

It is an amenable number.

12021036 is an abundant number, since it is smaller than the sum of its proper divisors (17317812).

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

12021036 is a wasteful number, since it uses less digits than its factorization.

12021036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12021036 is about 3467.1365707165. The cubic root of 12021036 is about 229.0765493530.

Adding to 12021036 its reverse (63012021), we get a palindrome (75033057).

The spelling of 12021036 in words is "twelve million, twenty-one thousand, thirty-six".