12102122122 has 4 divisors (see below), whose sum is σ = 18153183186. Its totient is φ = 6051061060.

The previous prime is 12102121963. The next prime is 12102122161. The reversal of 12102122122 is 22122120121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10263513481 + 1838608641 = 101309^2 + 42879^2 .

It is a super-2 number, since 2×12102122122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102122096 and 12102122105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025530529 + ... + 3025530532.

Almost surely, 2^12102122122 is an apocalyptic number.

12102122122 is a deficient number, since it is larger than the sum of its proper divisors (6051061064).

12102122122 is an equidigital number, since it uses as much as digits as its factorization.

12102122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051061063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12102122122 its reverse (22122120121), we get a palindrome (34224242243).

The spelling of 12102122122 in words is "twelve billion, one hundred two million, one hundred twenty-two thousand, one hundred twenty-two".