221234041131 has 24 divisors (see below), whose sum is σ = 305650051824. Its totient is φ = 142334115840.

The previous prime is 221234041111. The next prime is 221234041169. The reversal of 221234041131 is 131140432122.

It is not a de Polignac number, because 221234041131 - 2⁷ = 221234041003 is a prime.

It is a super-2 number, since 2×221234041131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221234041111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5431915 + ... + 5472491.

It is an arithmetic number, because the mean of its divisors is an integer number (12735418826).

Almost surely, 2^221234041131 is an apocalyptic number.

221234041131 is a deficient number, since it is larger than the sum of its proper divisors (84416010693).

221234041131 is a wasteful number, since it uses less digits than its factorization.

221234041131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42799 (or 42770 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 221234041131 its reverse (131140432122), we get a palindrome (352374473253).

The spelling of 221234041131 in words is "two hundred twenty-one billion, two hundred thirty-four million, forty-one thousand, one hundred thirty-one".