12077221 has 8 divisors (see below), whose sum is σ = 13037024. Its totient is φ = 11121840.

The previous prime is 12077209. The next prime is 12077237. The reversal of 12077221 is 12277021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12077221 - 2²³ = 3688613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12077192 and 12077201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12077251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6610 + ... + 8236.

It is an arithmetic number, because the mean of its divisors is an integer number (1629628).

Almost surely, 2^12077221 is an apocalyptic number.

It is an amenable number.

12077221 is a deficient number, since it is larger than the sum of its proper divisors (959803).

12077221 is a wasteful number, since it uses less digits than its factorization.

12077221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 12077221 is about 3475.2296327006. The cubic root of 12077221 is about 229.4328876311.

The spelling of 12077221 in words is "twelve million, seventy-seven thousand, two hundred twenty-one".