221213101100 has 36 divisors (see below), whose sum is σ = 480517036608. Its totient is φ = 88395912000.

The previous prime is 221213101073. The next prime is 221213101111. The reversal of 221213101100 is 1101312122.

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, 1017011 + ... + 1215210.

Almost surely, 2^221213101100 is an apocalyptic number.

221213101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221213101100 is an abundant number, since it is smaller than the sum of its proper divisors (259303935508).

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

221213101100 is a wasteful number, since it uses less digits than its factorization.

221213101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233226 (or 2233219 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 221213101100 its reverse (1101312122), we get a palindrome (222314413222).

The spelling of 221213101100 in words is "two hundred twenty-one billion, two hundred thirteen million, one hundred one thousand, one hundred".