12216700 has 18 divisors (see below), whose sum is σ = 26510456. Its totient is φ = 4886640.

The previous prime is 12216671. The next prime is 12216719. The reversal of 12216700 is 761221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60984 + ... + 61183.

Almost surely, 2^12216700 is an apocalyptic number.

12216700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12216700 is an abundant number, since it is smaller than the sum of its proper divisors (14293756).

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

12216700 is a wasteful number, since it uses less digits than its factorization.

12216700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122181 (or 122174 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 12216700 is about 3495.2396198258. The cubic root of 12216700 is about 230.3127440536.

Adding to 12216700 its reverse (761221), we get a palindrome (12977921).

It can be divided in two parts, 1221 and 6700, that added together give a square (7921 = 89²).

The spelling of 12216700 in words is "twelve million, two hundred sixteen thousand, seven hundred".