12102122 has 4 divisors (see below), whose sum is σ = 18153186. Its totient is φ = 6051060.

The previous prime is 12102091. The next prime is 12102127. The reversal of 12102122 is 22120121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22120121 = 71 ⋅311551.

It can be written as a sum of positive squares in only one way, i.e., 11909401 + 192721 = 3451^2 + 439^2 .

It is a super-2 number, since 2×12102122² = 292922713805768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12102127) by changing a digit.

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, 3025529 + ... + 3025532.

Almost surely, 2^12102122 is an apocalyptic number.

12102122 is a deficient number, since it is larger than the sum of its proper divisors (6051064).

12102122 is an equidigital number, since it uses as much as digits as its factorization.

12102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051063.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12102122 is about 3478.8104288679. The cubic root of 12102122 is about 229.5904621362.

Adding to 12102122 its reverse (22120121), we get a palindrome (34222243).

The spelling of 12102122 in words is "twelve million, one hundred two thousand, one hundred twenty-two".