22621203072 has 320 divisors, whose sum is σ = 73028848200. Its totient is φ = 6909566976.

The previous prime is 22621203053. The next prime is 22621203131. The reversal of 22621203072 is 27030212622.

22621203072 is a `hidden beast` number, since 2 + 2 + 621 + 2 + 0 + 30 + 7 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12990528576 + 9630674496 = 113976^2 + 98136^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21160554 + ... + 21161622.

Almost surely, 2^22621203072 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 22621203072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36514424100).

22621203072 is an abundant number, since it is smaller than the sum of its proper divisors (50407645128).

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

22621203072 is a wasteful number, since it uses less digits than its factorization.

22621203072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

Adding to 22621203072 its reverse (27030212622), we get a palindrome (49651415694).

The spelling of 22621203072 in words is "twenty-two billion, six hundred twenty-one million, two hundred three thousand, seventy-two".