221222023422 has 32 divisors (see below), whose sum is σ = 458648790912. Its totient is φ = 71077136544.

The previous prime is 221222023411. The next prime is 221222023427. The reversal of 221222023422 is 224320222122.

It is a junction number, because it is equal to n+sod(n) for n = 221222023392 and 221222023401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222023427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4632768 + ... + 4680275.

It is an arithmetic number, because the mean of its divisors is an integer number (14332774716).

Almost surely, 2^221222023422 is an apocalyptic number.

221222023422 is an abundant number, since it is smaller than the sum of its proper divisors (237426767490).

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

221222023422 is a wasteful number, since it uses less digits than its factorization.

221222023422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9313192.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 221222023422 its reverse (224320222122), we get a palindrome (445542245544).

The spelling of 221222023422 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-three thousand, four hundred twenty-two".