221322100201231 has 16 divisors (see below), whose sum is σ = 226416407961600. Its totient is φ = 216274324935168.

The previous prime is 221322100201217. The next prime is 221322100201249. The reversal of 221322100201231 is 132102001223122.

It is a cyclic number.

It is not a de Polignac number, because 221322100201231 - 2⁵ = 221322100201199 is a prime.

It is a super-2 number, since 2×221322100201231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221322100201291) 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 in 15 ways as a sum of consecutive naturals, for example, 6965700 + ... + 22162246.

It is an arithmetic number, because the mean of its divisors is an integer number (14151025497600).

Almost surely, 2^{221322100201231} is an apocalyptic number.

221322100201231 is a deficient number, since it is larger than the sum of its proper divisors (5094307760369).

221322100201231 is a wasteful number, since it uses less digits than its factorization.

221322100201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15198078.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221322100201231 its reverse (132102001223122), we get a palindrome (353424101424353).

The spelling of 221322100201231 in words is "two hundred twenty-one trillion, three hundred twenty-two billion, one hundred million, two hundred one thousand, two hundred thirty-one".