201200221100 has 36 divisors (see below), whose sum is σ = 455587288464. Its totient is φ = 76980953280.

The previous prime is 201200221093. The next prime is 201200221133. The reversal of 201200221100 is 1122002102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43736879 + ... + 43741478.

Almost surely, 2^201200221100 is an apocalyptic number.

201200221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201200221100 is an abundant number, since it is smaller than the sum of its proper divisors (254387067364).

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

201200221100 is a wasteful number, since it uses less digits than its factorization.

201200221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87478394 (or 87478387 counting only the distinct ones).

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

Adding to 201200221100 its reverse (1122002102), we get a palindrome (202322223202).

The spelling of 201200221100 in words is "two hundred one billion, two hundred million, two hundred twenty-one thousand, one hundred".