12198501 has 36 divisors (see below), whose sum is σ = 20748000. Its totient is φ = 6885648.

The previous prime is 12198499. The next prime is 12198509. The reversal of 12198501 is 10589121.

It is not a de Polignac number, because 12198501 - 2¹ = 12198499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12198509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 61200 + ... + 61398.

Almost surely, 2^12198501 is an apocalyptic number.

It is an amenable number.

12198501 is a deficient number, since it is larger than the sum of its proper divisors (8549499).

12198501 is a wasteful number, since it uses less digits than its factorization.

12198501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12198501 is about 3492.6352514971. The cubic root of 12198501 is about 230.1983229560.

The spelling of 12198501 in words is "twelve million, one hundred ninety-eight thousand, five hundred one".