221331022422 has 16 divisors (see below), whose sum is σ = 448725909360. Its totient is φ = 72766363392.

The previous prime is 221331022411. The next prime is 221331022427. The reversal of 221331022422 is 224220133122.

It is a junction number, because it is equal to n+sod(n) for n = 221331022392 and 221331022401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221331022427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252660547 + ... + 252661422.

It is an arithmetic number, because the mean of its divisors is an integer number (28045369335).

Almost surely, 2^221331022422 is an apocalyptic number.

221331022422 is an abundant number, since it is smaller than the sum of its proper divisors (227394886938).

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

221331022422 is a wasteful number, since it uses less digits than its factorization.

221331022422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505322047.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221331022422 its reverse (224220133122), we get a palindrome (445551155544).

The spelling of 221331022422 in words is "two hundred twenty-one billion, three hundred thirty-one million, twenty-two thousand, four hundred twenty-two".