12206212 has 6 divisors (see below), whose sum is σ = 21360878. Its totient is φ = 6103104.

The previous prime is 12206209. The next prime is 12206269. The reversal of 12206212 is 21260221.

It can be written as a sum of positive squares in only one way, i.e., 10653696 + 1552516 = 3264^2 + 1246^2 .

It is a super-2 number, since 2×12206212² = 297983222777888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1525773 + ... + 1525780.

Almost surely, 2^12206212 is an apocalyptic number.

It is an amenable number.

12206212 is a deficient number, since it is larger than the sum of its proper divisors (9154666).

12206212 is a wasteful number, since it uses less digits than its factorization.

12206212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051557 (or 3051555 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12206212 is about 3493.7389713601. The cubic root of 12206212 is about 230.2468175861.

Adding to 12206212 its reverse (21260221), we get a palindrome (33466433).

The spelling of 12206212 in words is "twelve million, two hundred six thousand, two hundred twelve".