12213950 has 24 divisors (see below), whose sum is σ = 25964112. Its totient is φ = 4187520.

The previous prime is 12213947. The next prime is 12213991. The reversal of 12213950 is 5931221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17099 + ... + 17798.

It is an arithmetic number, because the mean of its divisors is an integer number (1081838).

Almost surely, 2^12213950 is an apocalyptic number.

12213950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12213950 is an abundant number, since it is smaller than the sum of its proper divisors (13750162).

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

12213950 is a wasteful number, since it uses less digits than its factorization.

12213950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34916 (or 34911 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 12213950 is about 3494.8462054860. The cubic root of 12213950 is about 230.2954614930.

The spelling of 12213950 in words is "twelve million, two hundred thirteen thousand, nine hundred fifty".