213122212103 has 2 divisors, whose sum is σ = 213122212104. Its totient is φ = 213122212102.

The previous prime is 213122212081. The next prime is 213122212109. The reversal of 213122212103 is 301212221312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213122212103 - 2⁸ = 213122211847 is a prime.

It is a super-2 number, since 2×213122212103² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213122212109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561106051 + 106561106052.

It is an arithmetic number, because the mean of its divisors is an integer number (106561106052).

Almost surely, 2^213122212103 is an apocalyptic number.

213122212103 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122212103 is an equidigital number, since it uses as much as digits as its factorization.

213122212103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 213122212103 its reverse (301212221312), we get a palindrome (514334433415).

The spelling of 213122212103 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred twelve thousand, one hundred three".