221116700 has 36 divisors (see below), whose sum is σ = 548371152. Its totient is φ = 75811200.

The previous prime is 221116697. The next prime is 221116703. The reversal of 221116700 is 7611122.

It is an interprime number because it is at equal distance from previous prime (221116697) and next prime (221116703).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221116703) 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, 157241 + ... + 158640.

It is an arithmetic number, because the mean of its divisors is an integer number (15232532).

Almost surely, 2^221116700 is an apocalyptic number.

221116700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221116700 is an abundant number, since it is smaller than the sum of its proper divisors (327254452).

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

221116700 is a wasteful number, since it uses less digits than its factorization.

221116700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315902 (or 315895 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 221116700 is about 14869.9932750489. The cubic root of 221116700 is about 604.7007604252.

Adding to 221116700 its reverse (7611122), we get a palindrome (228727822).

The spelling of 221116700 in words is "two hundred twenty-one million, one hundred sixteen thousand, seven hundred".