12211764 has 12 divisors (see below), whose sum is σ = 28494144. Its totient is φ = 4070584.

The previous prime is 12211757. The next prime is 12211789. The reversal of 12211764 is 46711221.

12211764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508812 + ... + 508835.

It is an arithmetic number, because the mean of its divisors is an integer number (2374512).

Almost surely, 2^12211764 is an apocalyptic number.

It is an amenable number.

12211764 is an abundant number, since it is smaller than the sum of its proper divisors (16282380).

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

12211764 is a wasteful number, since it uses less digits than its factorization.

12211764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017654 (or 1017652 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 12211764 is about 3494.5334452542. The cubic root of 12211764 is about 230.2817215777.

Adding to 12211764 its reverse (46711221), we get a palindrome (58922985).

The spelling of 12211764 in words is "twelve million, two hundred eleven thousand, seven hundred sixty-four".