22042240244420 has 96 divisors (see below), whose sum is σ = 51000338261376. Its totient is φ = 7935439616000.

The previous prime is 22042240244417. The next prime is 22042240244459. The reversal of 22042240244420 is 2444204224022.

It is a super-2 number, since 2×22042240244420² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437642159 + ... + 437692521.

It is an arithmetic number, because the mean of its divisors is an integer number (531253523556).

Almost surely, 2^{22042240244420} is an apocalyptic number.

22042240244420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22042240244420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25500169130688).

22042240244420 is an abundant number, since it is smaller than the sum of its proper divisors (28958098016956).

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

22042240244420 is a wasteful number, since it uses less digits than its factorization.

22042240244420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70181 (or 70179 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 22042240244420 its reverse (2444204224022), we get a palindrome (24486444468442).

The spelling of 22042240244420 in words is "twenty-two trillion, forty-two billion, two hundred forty million, two hundred forty-four thousand, four hundred twenty".