22440204220440 has 32 divisors (see below), whose sum is σ = 67320612661680. Its totient is φ = 5984054458752.

The previous prime is 22440204220387. The next prime is 22440204220451. The reversal of 22440204220440 is 4402240204422.

It is a happy number.

It is a super-2 number, since 2×22440204220440² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22440204220398 and 22440204220407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93500850799 + ... + 93500851038.

Almost surely, 2^{22440204220440} is an apocalyptic number.

22440204220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22440204220440 is an abundant number, since it is smaller than the sum of its proper divisors (44880408441240).

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

22440204220440 is a wasteful number, since it uses less digits than its factorization.

22440204220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187001701851 (or 187001701847 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 22440204220440 its reverse (4402240204422), we get a palindrome (26842444424862).

The spelling of 22440204220440 in words is "twenty-two trillion, four hundred forty billion, two hundred four million, two hundred twenty thousand, four hundred forty".