221112042240 has 288 divisors, whose sum is σ = 765962640576. Its totient is φ = 54140600320.

The previous prime is 221112042181. The next prime is 221112042251. The reversal of 221112042240 is 42240211122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2635174 + ... + 2717786.

It is an arithmetic number, because the mean of its divisors is an integer number (2659592502).

Almost surely, 2^221112042240 is an apocalyptic number.

221112042240 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 221112042240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382981320288).

221112042240 is an abundant number, since it is smaller than the sum of its proper divisors (544850598336).

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

221112042240 is a wasteful number, since it uses less digits than its factorization.

221112042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82695 (or 82681 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221112042240 its reverse (42240211122), we get a palindrome (263352253362).

The spelling of 221112042240 in words is "two hundred twenty-one billion, one hundred twelve million, forty-two thousand, two hundred forty".