12021948 has 36 divisors (see below), whose sum is σ = 30499560. Its totient is φ = 3992736.

The previous prime is 12021923. The next prime is 12021953. The reversal of 12021948 is 84912021.

It is a tau number, because it is divible by the number of its divisors (36).

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, 14686 + ... + 15482.

It is an arithmetic number, because the mean of its divisors is an integer number (847210).

Almost surely, 2^12021948 is an apocalyptic number.

12021948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12021948 is an abundant number, since it is smaller than the sum of its proper divisors (18477612).

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

12021948 is a wasteful number, since it uses less digits than its factorization.

12021948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1221 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 12021948 is about 3467.2680888561. The cubic root of 12021948 is about 229.0823423238.

Adding to 12021948 its reverse (84912021), we get a palindrome (96933969).

The spelling of 12021948 in words is "twelve million, twenty-one thousand, nine hundred forty-eight".