12117802 has 4 divisors (see below), whose sum is σ = 18176706. Its totient is φ = 6058900.

The previous prime is 12117799. The next prime is 12117811. The reversal of 12117802 is 20871121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20871121 = 17 ⋅1227713.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 441 = 3481^2 + 21^2 .

It is a super-2 number, since 2×12117802² = 293682250622408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3029449 + ... + 3029452.

Almost surely, 2^12117802 is an apocalyptic number.

12117802 is a deficient number, since it is larger than the sum of its proper divisors (6058904).

12117802 is an equidigital number, since it uses as much as digits as its factorization.

12117802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6058903.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12117802 is about 3481.0633432904. The cubic root of 12117802 is about 229.6895749145.

Adding to 12117802 its reverse (20871121), we get a palindrome (32988923).

The spelling of 12117802 in words is "twelve million, one hundred seventeen thousand, eight hundred two".