221222401422 has 32 divisors (see below), whose sum is σ = 491773991040. Its totient is φ = 65772239520.

The previous prime is 221222401409. The next prime is 221222401423. The reversal of 221222401422 is 224104222122.

It is a junction number, because it is equal to n+sod(n) for n = 221222401392 and 221222401401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221222401423) 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, 31617772 + ... + 31624767.

It is an arithmetic number, because the mean of its divisors is an integer number (15367937220).

Almost surely, 2^221222401422 is an apocalyptic number.

221222401422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221222401422 is an abundant number, since it is smaller than the sum of its proper divisors (270551589618).

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

221222401422 is a wasteful number, since it uses less digits than its factorization.

221222401422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63242608.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221222401422 its reverse (224104222122), we get a palindrome (445326623544).

The spelling of 221222401422 in words is "two hundred twenty-one billion, two hundred twenty-two million, four hundred one thousand, four hundred twenty-two".