212102112721403 has 2 divisors, whose sum is σ = 212102112721404. Its totient is φ = 212102112721402.

The previous prime is 212102112721397. The next prime is 212102112721501. The reversal of 212102112721403 is 304127211201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212102112721403 - 2¹⁴ = 212102112705019 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212102112721903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051056360701 + 106051056360702.

It is an arithmetic number, because the mean of its divisors is an integer number (106051056360702).

Almost surely, 2^{212102112721403} is an apocalyptic number.

212102112721403 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102112721403 is an equidigital number, since it uses as much as digits as its factorization.

212102112721403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 212102112721403 its reverse (304127211201212), we get a palindrome (516229323922615).

The spelling of 212102112721403 in words is "two hundred twelve trillion, one hundred two billion, one hundred twelve million, seven hundred twenty-one thousand, four hundred three".