221312310103 has 2 divisors, whose sum is σ = 221312310104. Its totient is φ = 221312310102.

The previous prime is 221312310071. The next prime is 221312310151. The reversal of 221312310103 is 301013213122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221312310103 - 2⁵ = 221312310071 is a prime.

It is a super-3 number, since 3×221312310103³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221312310503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110656155051 + 110656155052.

It is an arithmetic number, because the mean of its divisors is an integer number (110656155052).

Almost surely, 2^221312310103 is an apocalyptic number.

221312310103 is a deficient number, since it is larger than the sum of its proper divisors (1).

221312310103 is an equidigital number, since it uses as much as digits as its factorization.

221312310103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 221312310103 its reverse (301013213122), we get a palindrome (522325523225).

The spelling of 221312310103 in words is "two hundred twenty-one billion, three hundred twelve million, three hundred ten thousand, one hundred three".