221240320232100 has 216 divisors, whose sum is σ = 693172585177632. Its totient is φ = 54457369574400.

The previous prime is 221240320232081. The next prime is 221240320232123. The reversal of 221240320232100 is 1232023042122.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2232829159 + ... + 2232928241.

Almost surely, 2^{221240320232100} is an apocalyptic number.

221240320232100 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 221240320232100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346586292588816).

221240320232100 is an abundant number, since it is smaller than the sum of its proper divisors (471932264945532).

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

221240320232100 is a wasteful number, since it uses less digits than its factorization.

221240320232100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143167 (or 143147 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 221240320232100 its reverse (1232023042122), we get a palindrome (222472343274222).

The spelling of 221240320232100 in words is "two hundred twenty-one trillion, two hundred forty billion, three hundred twenty million, two hundred thirty-two thousand, one hundred".