21222740060 has 48 divisors (see below), whose sum is σ = 45112267200. Its totient is φ = 8385790464.

The previous prime is 21222740059. The next prime is 21222740083. The reversal of 21222740060 is 6004722212.

It is a super-3 number, since 3×21222740060³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829946 + ... + 855134.

It is an arithmetic number, because the mean of its divisors is an integer number (939838900).

Almost surely, 2^21222740060 is an apocalyptic number.

21222740060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222740060 is an abundant number, since it is smaller than the sum of its proper divisors (23889527140).

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

21222740060 is a wasteful number, since it uses less digits than its factorization.

21222740060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25710 (or 25708 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The spelling of 21222740060 in words is "twenty-one billion, two hundred twenty-two million, seven hundred forty thousand, sixty".