12021025 has 12 divisors (see below), whose sum is σ = 15387904. Its totient is φ = 9306000.

The previous prime is 12021017. The next prime is 12021029. The reversal of 12021025 is 52012021.

It is not a de Polignac number, because 12021025 - 2³ = 12021017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020996 and 12021014.

It is not an unprimeable number, because it can be changed into a prime (12021029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6981 + ... + 8530.

Almost surely, 2^12021025 is an apocalyptic number.

It is an amenable number.

12021025 is a deficient number, since it is larger than the sum of its proper divisors (3366879).

12021025 is a wasteful number, since it uses less digits than its factorization.

12021025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15552 (or 15547 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 12021025 is about 3467.1349843927. The cubic root of 12021025 is about 229.0764794799.

Adding to 12021025 its reverse (52012021), we get a palindrome (64033046).

The spelling of 12021025 in words is "twelve million, twenty-one thousand, twenty-five".