12102121253 has 2 divisors, whose sum is σ = 12102121254. Its totient is φ = 12102121252.

The previous prime is 12102121189. The next prime is 12102121261. The reversal of 12102121253 is 35212120121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11513719204 + 588402049 = 107302^2 + 24257^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102121253 - 2⁶ = 12102121189 is a prime.

It is a super-2 number, since 2×12102121253² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102121553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051060626 + 6051060627.

It is an arithmetic number, because the mean of its divisors is an integer number (6051060627).

Almost surely, 2^12102121253 is an apocalyptic number.

It is an amenable number.

12102121253 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102121253 is an equidigital number, since it uses as much as digits as its factorization.

12102121253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 12102121253 its reverse (35212120121), we get a palindrome (47314241374).

The spelling of 12102121253 in words is "twelve billion, one hundred two million, one hundred twenty-one thousand, two hundred fifty-three".