12102421403 has 2 divisors, whose sum is σ = 12102421404. Its totient is φ = 12102421402.

The previous prime is 12102421391. The next prime is 12102421453. The reversal of 12102421403 is 30412420121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12102421403 is a prime.

It is not a weakly prime, because it can be changed into another prime (12102421453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051210701 + 6051210702.

It is an arithmetic number, because the mean of its divisors is an integer number (6051210702).

Almost surely, 2^12102421403 is an apocalyptic number.

12102421403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102421403 is an equidigital number, since it uses as much as digits as its factorization.

12102421403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12102421403 its reverse (30412420121), we get a palindrome (42514841524).

The spelling of 12102421403 in words is "twelve billion, one hundred two million, four hundred twenty-one thousand, four hundred three".