221230223100 has 108 divisors (see below), whose sum is σ = 710346982800. Its totient is φ = 57555820800.

The previous prime is 221230223041. The next prime is 221230223101. The reversal of 221230223100 is 1322032122.

It is a super-3 number, since 3×221230223100³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221230223101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2960800 + ... + 3034599.

Almost surely, 2^221230223100 is an apocalyptic number.

221230223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221230223100 is an abundant number, since it is smaller than the sum of its proper divisors (489116759700).

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

221230223100 is a wasteful number, since it uses less digits than its factorization.

221230223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5995460 (or 5995450 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 221230223100 its reverse (1322032122), we get a palindrome (222552255222).

The spelling of 221230223100 in words is "two hundred twenty-one billion, two hundred thirty million, two hundred twenty-three thousand, one hundred".