221323030110 has 192 divisors, whose sum is σ = 709927021440. Its totient is φ = 46585082880.

The previous prime is 221323030099. The next prime is 221323030133. The reversal of 221323030110 is 11030323122.

221323030110 is a `hidden beast` number, since 221 + 32 + 303 + 0 + 110 = 666.

It is a super-2 number, since 2×221323030110² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3415896 + ... + 3480084.

It is an arithmetic number, because the mean of its divisors is an integer number (3697536570).

Almost surely, 2^221323030110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221323030110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354963510720).

221323030110 is an abundant number, since it is smaller than the sum of its proper divisors (488603991330).

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

221323030110 is a wasteful number, since it uses less digits than its factorization.

221323030110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64643 (or 64640 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 221323030110 its reverse (11030323122), we get a palindrome (232353353232).

The spelling of 221323030110 in words is "two hundred twenty-one billion, three hundred twenty-three million, thirty thousand, one hundred ten".