221141112100 has 72 divisors (see below), whose sum is σ = 507924435200. Its totient is φ = 83337724800.

The previous prime is 221141112097. The next prime is 221141112109. The reversal of 221141112100 is 1211141122.

It is not an unprimeable number, because it can be changed into a prime (221141112109) 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, 22381 + ... + 665419.

Almost surely, 2^221141112100 is an apocalyptic number.

221141112100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221141112100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253962217600).

221141112100 is an abundant number, since it is smaller than the sum of its proper divisors (286783323100).

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

221141112100 is a wasteful number, since it uses less digits than its factorization.

221141112100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643253 (or 643246 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221141112100 its reverse (1211141122), we get a palindrome (222352253222).

The spelling of 221141112100 in words is "two hundred twenty-one billion, one hundred forty-one million, one hundred twelve thousand, one hundred".