22061521200 has 120 divisors (see below), whose sum is σ = 71037319888. Its totient is φ = 5852528640.

The previous prime is 22061521199. The next prime is 22061521253. The reversal of 22061521200 is 212516022.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183972 + ... + 279228.

Almost surely, 2^22061521200 is an apocalyptic number.

22061521200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22061521200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35518659944).

22061521200 is an abundant number, since it is smaller than the sum of its proper divisors (48975798688).

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

22061521200 is a wasteful number, since it uses less digits than its factorization.

22061521200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95471 (or 95460 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The spelling of 22061521200 in words is "twenty-two billion, sixty-one million, five hundred twenty-one thousand, two hundred".