221303131422 has 16 divisors (see below), whose sum is σ = 446666872080. Its totient is φ = 73090942272.

The previous prime is 221303131409. The next prime is 221303131453. The reversal of 221303131422 is 224131303122.

It is a junction number, because it is equal to n+sod(n) for n = 221303131392 and 221303131401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169191343 + ... + 169192650.

It is an arithmetic number, because the mean of its divisors is an integer number (27916679505).

Almost surely, 2^221303131422 is an apocalyptic number.

221303131422 is an abundant number, since it is smaller than the sum of its proper divisors (225363740658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221303131422 is a wasteful number, since it uses less digits than its factorization.

221303131422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338384107.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 221303131422 its reverse (224131303122), we get a palindrome (445434434544).

The spelling of 221303131422 in words is "two hundred twenty-one billion, three hundred three million, one hundred thirty-one thousand, four hundred twenty-two".