12205501 has 16 divisors (see below), whose sum is σ = 15297408. Its totient is φ = 9460800.

The previous prime is 12205483. The next prime is 12205511. The reversal of 12205501 is 10550221.

It is a cyclic number.

It is not a de Polignac number, because 12205501 - 2⁹ = 12204989 is a prime.

It is a super-2 number, since 2×12205501² = 297948509322002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22291 + ... + 22831.

It is an arithmetic number, because the mean of its divisors is an integer number (956088).

Almost surely, 2^12205501 is an apocalyptic number.

12205501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12205501 is a deficient number, since it is larger than the sum of its proper divisors (3091907).

12205501 is a wasteful number, since it uses less digits than its factorization.

12205501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 12205501 is about 3493.6372164265. The cubic root of 12205501 is about 230.2423469481.

Adding to 12205501 its reverse (10550221), we get a palindrome (22755722).

The spelling of 12205501 in words is "twelve million, two hundred five thousand, five hundred one".