12201969 has 24 divisors (see below), whose sum is σ = 18077472. Its totient is φ = 7313280.

The previous prime is 12201961. The next prime is 12201991. The reversal of 12201969 is 96910221.

It is a happy number.

It is not a de Polignac number, because 12201969 - 2³ = 12201961 is a prime.

It is a super-2 number, since 2×12201969² = 297776094953922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12201961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20494 + ... + 21080.

It is an arithmetic number, because the mean of its divisors is an integer number (753228).

Almost surely, 2^12201969 is an apocalyptic number.

It is an amenable number.

12201969 is a deficient number, since it is larger than the sum of its proper divisors (5875503).

12201969 is a wasteful number, since it uses less digits than its factorization.

12201969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 12201969 is about 3493.1316894729. The cubic root of 12201969 is about 230.2201358040.

The spelling of 12201969 in words is "twelve million, two hundred one thousand, nine hundred sixty-nine".