221240947304 has 32 divisors (see below), whose sum is σ = 447229261920. Its totient is φ = 101998581696.

The previous prime is 221240947303. The next prime is 221240947309. The reversal of 221240947304 is 403749042122.

It is not an unprimeable number, because it can be changed into a prime (221240947303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078394 + ... + 1267049.

It is an arithmetic number, because the mean of its divisors is an integer number (13975914435).

Almost surely, 2^221240947304 is an apocalyptic number.

It is an amenable number.

221240947304 is an abundant number, since it is smaller than the sum of its proper divisors (225988314616).

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

221240947304 is a wasteful number, since it uses less digits than its factorization.

221240947304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346369 (or 2346365 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

Adding to 221240947304 its reverse (403749042122), we get a palindrome (624989989426).

The spelling of 221240947304 in words is "two hundred twenty-one billion, two hundred forty million, nine hundred forty-seven thousand, three hundred four".