12205972 has 6 divisors (see below), whose sum is σ = 21360458. Its totient is φ = 6102984.

The previous prime is 12205957. The next prime is 12205981. The reversal of 12205972 is 27950221.

It can be written as a sum of positive squares in only one way, i.e., 10732176 + 1473796 = 3276^2 + 1214^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12205972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1525743 + ... + 1525750.

Almost surely, 2^12205972 is an apocalyptic number.

It is an amenable number.

12205972 is a deficient number, since it is larger than the sum of its proper divisors (9154486).

12205972 is a wasteful number, since it uses less digits than its factorization.

12205972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051497 (or 3051495 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12205972 is about 3493.7046240345. The cubic root of 12205972 is about 230.2453085294.

The spelling of 12205972 in words is "twelve million, two hundred five thousand, nine hundred seventy-two".