11962221 has 4 divisors (see below), whose sum is σ = 15949632. Its totient is φ = 7974812.

The previous prime is 11962217. The next prime is 11962241. The reversal of 11962221 is 12226911.

11962221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12226911 = 3 ⋅4075637.

It is a cyclic number.

It is not a de Polignac number, because 11962221 - 2² = 11962217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11962191 and 11962200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11962241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1993701 + ... + 1993706.

It is an arithmetic number, because the mean of its divisors is an integer number (3987408).

Almost surely, 2^11962221 is an apocalyptic number.

It is an amenable number.

11962221 is a deficient number, since it is larger than the sum of its proper divisors (3987411).

11962221 is an equidigital number, since it uses as much as digits as its factorization.

11962221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987410.

The product of its digits is 432, while the sum is 24.

The square root of 11962221 is about 3458.6443876178. The cubic root of 11962221 is about 228.7023394987.

The spelling of 11962221 in words is "eleven million, nine hundred sixty-two thousand, two hundred twenty-one".