12102121663 has 2 divisors, whose sum is σ = 12102121664. Its totient is φ = 12102121662.

The previous prime is 12102121639. The next prime is 12102121667. The reversal of 12102121663 is 36612120121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12102121663 - 2¹⁷ = 12101990591 is a prime.

It is a super-2 number, since 2×12102121663² (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 (12102121667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051060831 + 6051060832.

It is an arithmetic number, because the mean of its divisors is an integer number (6051060832).

Almost surely, 2^12102121663 is an apocalyptic number.

12102121663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102121663 is an equidigital number, since it uses as much as digits as its factorization.

12102121663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 12102121663 its reverse (36612120121), we get a palindrome (48714241784).

The spelling of 12102121663 in words is "twelve billion, one hundred two million, one hundred twenty-one thousand, six hundred sixty-three".