221100101211200 has 84 divisors (see below), whose sum is σ = 544164103543632. Its totient is φ = 88420587379200.

The previous prime is 221100101211193. The next prime is 221100101211203. The reversal of 221100101211200 is 2112101001122.

It is not an unprimeable number, because it can be changed into a prime (221100101211203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7920266 + ... + 22470665.

Almost surely, 2^{221100101211200} is an apocalyptic number.

221100101211200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100101211200 is an abundant number, since it is smaller than the sum of its proper divisors (323064002332432).

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

221100101211200 is a wasteful number, since it uses less digits than its factorization.

221100101211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30395500 (or 30395485 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221100101211200 its reverse (2112101001122), we get a palindrome (223212202212322).

The spelling of 221100101211200 in words is "two hundred twenty-one trillion, one hundred billion, one hundred one million, two hundred eleven thousand, two hundred".