12219516 has 36 divisors (see below), whose sum is σ = 31063032. Its totient is φ = 4050144.

The previous prime is 12219511. The next prime is 12219523. The reversal of 12219516 is 61591221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12219516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12219511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6231 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (862862).

Almost surely, 2^12219516 is an apocalyptic number.

It is an amenable number.

12219516 is an abundant number, since it is smaller than the sum of its proper divisors (18843516).

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

12219516 is a wasteful number, since it uses less digits than its factorization.

12219516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930 (or 1925 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 12219516 is about 3495.6424302265. The cubic root of 12219516 is about 230.3304387082.

The spelling of 12219516 in words is "twelve million, two hundred nineteen thousand, five hundred sixteen".