240020332142221 has 4 divisors (see below), whose sum is σ = 240653631172000. Its totient is φ = 239387033112444.

The previous prime is 240020332142219. The next prime is 240020332142231. The reversal of 240020332142221 is 122241233020042.

240020332142221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240020332142221 - 2¹ = 240020332142219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240020332142221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240020332142231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316649514321 + ... + 316649515078.

It is an arithmetic number, because the mean of its divisors is an integer number (60163407793000).

Almost surely, 2^{240020332142221} is an apocalyptic number.

It is an amenable number.

240020332142221 is a deficient number, since it is larger than the sum of its proper divisors (633299029779).

240020332142221 is an equidigital number, since it uses as much as digits as its factorization.

240020332142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633299029778.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 240020332142221 its reverse (122241233020042), we get a palindrome (362261565162263).

The spelling of 240020332142221 in words is "two hundred forty trillion, twenty billion, three hundred thirty-two million, one hundred forty-two thousand, two hundred twenty-one".