22121101230240 has 96 divisors (see below), whose sum is σ = 69683522771520. Its totient is φ = 5898786453504.

The previous prime is 22121101230187. The next prime is 22121101230247. The reversal of 22121101230240 is 4203210112122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (22121101230247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16051332 + ... + 17374908.

It is an arithmetic number, because the mean of its divisors is an integer number (725870028870).

Almost surely, 2^{22121101230240} is an apocalyptic number.

22121101230240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121101230240 is an abundant number, since it is smaller than the sum of its proper divisors (47562421541280).

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

22121101230240 is a wasteful number, since it uses less digits than its factorization.

22121101230240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358414 (or 1358406 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 22121101230240 its reverse (4203210112122), we get a palindrome (26324311342362).

The spelling of 22121101230240 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred one million, two hundred thirty thousand, two hundred forty".