221201102000 has 40 divisors (see below), whose sum is σ = 534864269472. Its totient is φ = 88480440000.

The previous prime is 221201101987. The next prime is 221201102099. The reversal of 221201102000 is 201102122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 55298276 + ... + 55302275.

Almost surely, 2^221201102000 is an apocalyptic number.

221201102000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201102000 is an abundant number, since it is smaller than the sum of its proper divisors (313663167472).

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

221201102000 is a wasteful number, since it uses less digits than its factorization.

221201102000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110600574 (or 110600558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221201102000 its reverse (201102122), we get a palindrome (221402204122).

The spelling of 221201102000 in words is "two hundred twenty-one billion, two hundred one million, one hundred two thousand".