221301013121311 has 4 divisors (see below), whose sum is σ = 221301088553800. Its totient is φ = 221300937688824.

The previous prime is 221301013121299. The next prime is 221301013121327. The reversal of 221301013121311 is 113121310103122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221301013121311 - 2¹³ = 221301013113119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221301013121011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33129681 + ... + 39245098.

It is an arithmetic number, because the mean of its divisors is an integer number (55325272138450).

Almost surely, 2^{221301013121311} is an apocalyptic number.

221301013121311 is a deficient number, since it is larger than the sum of its proper divisors (75432489).

221301013121311 is an equidigital number, since it uses as much as digits as its factorization.

221301013121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75432488.

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

Adding to 221301013121311 its reverse (113121310103122), we get a palindrome (334422323224433).

The spelling of 221301013121311 in words is "two hundred twenty-one trillion, three hundred one billion, thirteen million, one hundred twenty-one thousand, three hundred eleven".