22001011008 has 224 divisors, whose sum is σ = 63313056000. Its totient is φ = 6721634304.

The previous prime is 22001011001. The next prime is 22001011061. The reversal of 22001011008 is 80011010022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001011001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19080960 + ... + 19082112.

Almost surely, 2^22001011008 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 22001011008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31656528000).

22001011008 is an abundant number, since it is smaller than the sum of its proper divisors (41312044992).

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

22001011008 is a wasteful number, since it uses less digits than its factorization.

22001011008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The spelling of 22001011008 in words is "twenty-two billion, one million, eleven thousand, eight".