22254034220440 has 128 divisors (see below), whose sum is σ = 56711114625600. Its totient is φ = 7785120430080.

The previous prime is 22254034220401. The next prime is 22254034220447. The reversal of 22254034220440 is 4402243045222.

It is a junction number, because it is equal to n+sod(n) for n = 22254034220396 and 22254034220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254034220447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386422 + ... + 6682618.

Almost surely, 2^{22254034220440} is an apocalyptic number.

22254034220440 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 22254034220440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28355557312800).

22254034220440 is an abundant number, since it is smaller than the sum of its proper divisors (34457080405160).

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

22254034220440 is a wasteful number, since it uses less digits than its factorization.

22254034220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6296525 (or 6296521 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 34.

Adding to 22254034220440 its reverse (4402243045222), we get a palindrome (26656277265662).

The spelling of 22254034220440 in words is "twenty-two trillion, two hundred fifty-four billion, thirty-four million, two hundred twenty thousand, four hundred forty".