221213003131111 has 2 divisors, whose sum is σ = 221213003131112. Its totient is φ = 221213003131110.

The previous prime is 221213003131093. The next prime is 221213003131129. The reversal of 221213003131111 is 111131300312122.

It is a balanced prime because it is at equal distance from previous prime (221213003131093) and next prime (221213003131129).

It is a cyclic number.

It is not a de Polignac number, because 221213003131111 - 2⁷ = 221213003130983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221213003131411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606501565555 + 110606501565556.

It is an arithmetic number, because the mean of its divisors is an integer number (110606501565556).

Almost surely, 2^{221213003131111} is an apocalyptic number.

221213003131111 is a deficient number, since it is larger than the sum of its proper divisors (1).

221213003131111 is an equidigital number, since it uses as much as digits as its factorization.

221213003131111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 221213003131111 its reverse (111131300312122), we get a palindrome (332344303443233).

The spelling of 221213003131111 in words is "two hundred twenty-one trillion, two hundred thirteen billion, three million, one hundred thirty-one thousand, one hundred eleven".