221323342441331 has 16 divisors (see below), whose sum is σ = 238467182497824. Its totient is φ = 204196507317504.

The previous prime is 221323342441303. The next prime is 221323342441351. The reversal of 221323342441331 is 133144243323122.

It is not a de Polignac number, because 221323342441331 - 2¹⁰ = 221323342440307 is a prime.

It is a super-2 number, since 2×221323342441331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221323342441351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588207800 + ... + 588583946.

It is an arithmetic number, because the mean of its divisors is an integer number (14904198906114).

Almost surely, 2^{221323342441331} is an apocalyptic number.

221323342441331 is a deficient number, since it is larger than the sum of its proper divisors (17143840056493).

221323342441331 is a wasteful number, since it uses less digits than its factorization.

221323342441331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398630.

The product of its digits is 248832, while the sum is 38.

Adding to 221323342441331 its reverse (133144243323122), we get a palindrome (354467585764453).

The spelling of 221323342441331 in words is "two hundred twenty-one trillion, three hundred twenty-three billion, three hundred forty-two million, four hundred forty-one thousand, three hundred thirty-one".