12200221 has 8 divisors (see below), whose sum is σ = 13341600. Its totient is φ = 11064240.

The previous prime is 12200179. The next prime is 12200239.

12200221 is nontrivially palindromic in base 10.

12200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12200221 - 2¹³ = 12192029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200198 and 12200207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200291) 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, 4510 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (1667700).

Almost surely, 2^12200221 is an apocalyptic number.

12200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12200221 is a deficient number, since it is larger than the sum of its proper divisors (1141379).

12200221 is a wasteful number, since it uses less digits than its factorization.

12200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12200221 is about 3492.8814752293. The cubic root of 12200221 is about 230.2091418402.

It can be divided in two parts, 12200 and 221, that added together give a palindrome (12421).

The spelling of 12200221 in words is "twelve million, two hundred thousand, two hundred twenty-one".