22001203008 has 42 divisors (see below), whose sum is σ = 63062477634. Its totient is φ = 7333734144.

The previous prime is 22001203001. The next prime is 22001203009. The reversal of 22001203008 is 80030210022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19928404224 + 2072798784 = 141168^2 + 45528^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001203001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19097691 + ... + 19098842.

Almost surely, 2^22001203008 is an apocalyptic number.

It is an amenable number.

22001203008 is an abundant number, since it is smaller than the sum of its proper divisors (41061274626).

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

22001203008 is a wasteful number, since it uses less digits than its factorization.

22001203008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38196551 (or 38196538 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The spelling of 22001203008 in words is "twenty-two billion, one million, two hundred three thousand, eight".