221110331413 has 2 divisors, whose sum is σ = 221110331414. Its totient is φ = 221110331412.

The previous prime is 221110331401. The next prime is 221110331417. The reversal of 221110331413 is 314133011122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152894294289 + 68216037124 = 391017^2 + 261182^2 .

It is a cyclic number.

It is not a de Polignac number, because 221110331413 - 2²¹ = 221108234261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221110331417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555165706 + 110555165707.

It is an arithmetic number, because the mean of its divisors is an integer number (110555165707).

Almost surely, 2^221110331413 is an apocalyptic number.

It is an amenable number.

221110331413 is a deficient number, since it is larger than the sum of its proper divisors (1).

221110331413 is an equidigital number, since it uses as much as digits as its factorization.

221110331413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 221110331413 its reverse (314133011122), we get a palindrome (535243342535).

The spelling of 221110331413 in words is "two hundred twenty-one billion, one hundred ten million, three hundred thirty-one thousand, four hundred thirteen".