221211234430103 has 2 divisors, whose sum is σ = 221211234430104. Its totient is φ = 221211234430102.

The previous prime is 221211234430057. The next prime is 221211234430157. The reversal of 221211234430103 is 301034432112122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221211234430103 - 2¹⁰ = 221211234429079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221211234400103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605617215051 + 110605617215052.

It is an arithmetic number, because the mean of its divisors is an integer number (110605617215052).

Almost surely, 2^{221211234430103} is an apocalyptic number.

221211234430103 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211234430103 is an equidigital number, since it uses as much as digits as its factorization.

221211234430103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 221211234430103 its reverse (301034432112122), we get a palindrome (522245666542225).

The spelling of 221211234430103 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred thirty-four million, four hundred thirty thousand, one hundred three".