221324034040 has 32 divisors (see below), whose sum is σ = 499134519360. Its totient is φ = 88324201600.

The previous prime is 221324034007. The next prime is 221324034091. The reversal of 221324034040 is 40430423122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221324033996 and 221324034014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6401671 + ... + 6436150.

It is an arithmetic number, because the mean of its divisors is an integer number (15597953730).

Almost surely, 2^221324034040 is an apocalyptic number.

221324034040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221324034040 is an abundant number, since it is smaller than the sum of its proper divisors (277810485320).

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

221324034040 is a wasteful number, since it uses less digits than its factorization.

221324034040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12838263 (or 12838259 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 221324034040 its reverse (40430423122), we get a palindrome (261754457162).

The spelling of 221324034040 in words is "two hundred twenty-one billion, three hundred twenty-four million, thirty-four thousand, forty".