223031220221131 has 16 divisors (see below), whose sum is σ = 255221540222464. Its totient is φ = 190923088716864.

The previous prime is 223031220221129. The next prime is 223031220221171. The reversal of 223031220221131 is 131122022130322.

It is not a de Polignac number, because 223031220221131 - 2¹ = 223031220221129 is a prime.

It is a super-2 number, since 2×223031220221131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223031220221096 and 223031220221105.

It is not an unprimeable number, because it can be changed into a prime (223031220221171) 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, 313564111 + ... + 314274583.

It is an arithmetic number, because the mean of its divisors is an integer number (15951346263904).

Almost surely, 2^{223031220221131} is an apocalyptic number.

223031220221131 is a deficient number, since it is larger than the sum of its proper divisors (32190320001333).

223031220221131 is an equidigital number, since it uses as much as digits as its factorization.

223031220221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768250.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 223031220221131 its reverse (131122022130322), we get a palindrome (354153242351453).

The spelling of 223031220221131 in words is "two hundred twenty-three trillion, thirty-one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred thirty-one".