221200201011100 has 72 divisors (see below), whose sum is σ = 481807646114816. Its totient is φ = 88147734840000.

The previous prime is 221200201011073. The next prime is 221200201011109. The reversal of 221200201011100 is 1110102002122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200201011109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420084985 + ... + 420611215.

Almost surely, 2^{221200201011100} is an apocalyptic number.

221200201011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200201011100 is an abundant number, since it is smaller than the sum of its proper divisors (260607445103716).

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

221200201011100 is a wasteful number, since it uses less digits than its factorization.

221200201011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542027 (or 542020 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221200201011100 its reverse (1110102002122), we get a palindrome (222310303013222).

The spelling of 221200201011100 in words is "two hundred twenty-one trillion, two hundred billion, two hundred one million, eleven thousand, one hundred".