221332034250 has 160 divisors (see below), whose sum is σ = 619628106240. Its totient is φ = 58956530400.

The previous prime is 221332034243. The next prime is 221332034251. The reversal of 221332034250 is 52430233122.

221332034250 is a `hidden beast` number, since 2 + 2 + 1 + 33 + 203 + 425 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (221332034251) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19900191 + ... + 19911309.

It is an arithmetic number, because the mean of its divisors is an integer number (3872675664).

Almost surely, 2^221332034250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221332034250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309814053120).

221332034250 is an abundant number, since it is smaller than the sum of its proper divisors (398296071990).

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

221332034250 is a wasteful number, since it uses less digits than its factorization.

221332034250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131 (or 12112 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 221332034250 its reverse (52430233122), we get a palindrome (273762267372).

The spelling of 221332034250 in words is "two hundred twenty-one billion, three hundred thirty-two million, thirty-four thousand, two hundred fifty".