22065121340 has 12 divisors (see below), whose sum is σ = 46336754856. Its totient is φ = 8826048528.

The previous prime is 22065121339. The next prime is 22065121343. The reversal of 22065121340 is 4312156022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22065121343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551628014 + ... + 551628053.

It is an arithmetic number, because the mean of its divisors is an integer number (3861396238).

Almost surely, 2^22065121340 is an apocalyptic number.

22065121340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22065121340 is an abundant number, since it is smaller than the sum of its proper divisors (24271633516).

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

22065121340 is a wasteful number, since it uses less digits than its factorization.

22065121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103256076 (or 1103256074 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 22065121340 its reverse (4312156022), we get a palindrome (26377277362).

The spelling of 22065121340 in words is "twenty-two billion, sixty-five million, one hundred twenty-one thousand, three hundred forty".