22921271072 has 96 divisors (see below), whose sum is σ = 55611722880. Its totient is φ = 9079326720.

The previous prime is 22921271059. The next prime is 22921271099. The reversal of 22921271072 is 27017212922.

It is a super-2 number, since 2×22921271072² (a number of 22 digits) contains 22 as substring.

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, 108818 + ... + 240174.

It is an arithmetic number, because the mean of its divisors is an integer number (579288780).

Almost surely, 2^22921271072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22921271072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27805861440).

22921271072 is an abundant number, since it is smaller than the sum of its proper divisors (32690451808).

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

22921271072 is a wasteful number, since it uses less digits than its factorization.

22921271072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131434 (or 131426 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

Adding to 22921271072 its reverse (27017212922), we get a palindrome (49938483994).

The spelling of 22921271072 in words is "twenty-two billion, nine hundred twenty-one million, two hundred seventy-one thousand, seventy-two".