22355012340 has 96 divisors (see below), whose sum is σ = 69902300160. Its totient is φ = 5931047808.

The previous prime is 22355012327. The next prime is 22355012369. The reversal of 22355012340 is 4321055322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1309 + ... + 211451.

It is an arithmetic number, because the mean of its divisors is an integer number (728148960).

Almost surely, 2^22355012340 is an apocalyptic number.

22355012340 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 22355012340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34951150080).

22355012340 is an abundant number, since it is smaller than the sum of its proper divisors (47547287820).

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

22355012340 is a wasteful number, since it uses less digits than its factorization.

22355012340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210358 (or 210350 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 22355012340 its reverse (4321055322), we get a palindrome (26676067662).

The spelling of 22355012340 in words is "twenty-two billion, three hundred fifty-five million, twelve thousand, three hundred forty".