12219650 has 12 divisors (see below), whose sum is σ = 22728642. Its totient is φ = 4887840.

The previous prime is 12219631. The next prime is 12219653. The reversal of 12219650 is 5691221.

It can be written as a sum of positive squares in 3 ways, for example, as 9966649 + 2253001 = 3157^2 + 1501^2 .

It is a super-2 number, since 2×12219650² = 298639692245000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12219653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122147 + ... + 122246.

Almost surely, 2^12219650 is an apocalyptic number.

12219650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12219650 is a deficient number, since it is larger than the sum of its proper divisors (10508992).

12219650 is a wasteful number, since it uses less digits than its factorization.

12219650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244405 (or 244400 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 12219650 is about 3495.6615968941. The cubic root of 12219650 is about 230.3312806446.

The spelling of 12219650 in words is "twelve million, two hundred nineteen thousand, six hundred fifty".