22121240160 has 48 divisors (see below), whose sum is σ = 69681908016. Its totient is φ = 5898997248.

The previous prime is 22121240153. The next prime is 22121240161. The reversal of 22121240160 is 6104212122.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121240161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23042479 + ... + 23043438.

It is an arithmetic number, because the mean of its divisors is an integer number (1451706417).

Almost surely, 2^22121240160 is an apocalyptic number.

22121240160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121240160 is an abundant number, since it is smaller than the sum of its proper divisors (47560667856).

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

22121240160 is a wasteful number, since it uses less digits than its factorization.

22121240160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46085935 (or 46085927 counting only the distinct ones).

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

Adding to 22121240160 its reverse (6104212122), we get a palindrome (28225452282).

The spelling of 22121240160 in words is "twenty-two billion, one hundred twenty-one million, two hundred forty thousand, one hundred sixty".