240420122220321 has 20 divisors (see below), whose sum is σ = 359274788921664. Its totient is φ = 160222653855000.

The previous prime is 240420122220263. The next prime is 240420122220323. The reversal of 240420122220321 is 123022221024042.

240420122220321 is a `hidden beast` number, since 2 + 4 + 0 + 420 + 12 + 2 + 2 + 203 + 21 = 666.

It is not a de Polignac number, because 240420122220321 - 2⁷ = 240420122220193 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (240420122220323) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 531509805 + ... + 531961946.

Almost surely, 2^{240420122220321} is an apocalyptic number.

It is an amenable number.

240420122220321 is a deficient number, since it is larger than the sum of its proper divisors (118854666701343).

240420122220321 is a wasteful number, since it uses less digits than its factorization.

240420122220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063474554 (or 1063474545 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 240420122220321 its reverse (123022221024042), we get a palindrome (363442343244363).

The spelling of 240420122220321 in words is "two hundred forty trillion, four hundred twenty billion, one hundred twenty-two million, two hundred twenty thousand, three hundred twenty-one".