211212210103 has 2 divisors, whose sum is σ = 211212210104. Its totient is φ = 211212210102.

The previous prime is 211212210049. The next prime is 211212210113. The reversal of 211212210103 is 301012212112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211212210103 is a prime.

It is a super-2 number, since 2×211212210103² (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 (211212210113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606105051 + 105606105052.

It is an arithmetic number, because the mean of its divisors is an integer number (105606105052).

Almost surely, 2^211212210103 is an apocalyptic number.

211212210103 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212210103 is an equidigital number, since it uses as much as digits as its factorization.

211212210103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 211212210103 its reverse (301012212112), we get a palindrome (512224422215).

The spelling of 211212210103 in words is "two hundred eleven billion, two hundred twelve million, two hundred ten thousand, one hundred three".