12077220 has 24 divisors (see below), whose sum is σ = 33816384. Its totient is φ = 3220576.

The previous prime is 12077209. The next prime is 12077237. The reversal of 12077220 is 2277021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100584 + ... + 100703.

It is an arithmetic number, because the mean of its divisors is an integer number (1409016).

Almost surely, 2^12077220 is an apocalyptic number.

12077220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12077220 is an abundant number, since it is smaller than the sum of its proper divisors (21739164).

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

12077220 is a wasteful number, since it uses less digits than its factorization.

12077220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201299 (or 201297 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 12077220 is about 3475.2294888252. The cubic root of 12077220 is about 229.4328812987.

The spelling of 12077220 in words is "twelve million, seventy-seven thousand, two hundred twenty".