2440213420221 has 32 divisors (see below), whose sum is σ = 3631251505920. Its totient is φ = 1619561889792.

The previous prime is 2440213420207. The next prime is 2440213420247. The reversal of 2440213420221 is 1220243120442.

It is a happy number.

2440213420221 is a `hidden beast` number, since 2 + 4 + 4 + 0 + 2 + 13 + 420 + 221 = 666.

It is not a de Polignac number, because 2440213420221 - 2²⁶ = 2440146311357 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440213420261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12273621 + ... + 12470853.

It is an arithmetic number, because the mean of its divisors is an integer number (113476609560).

Almost surely, 2^{2440213420221} is an apocalyptic number.

It is an amenable number.

2440213420221 is a deficient number, since it is larger than the sum of its proper divisors (1191038085699).

2440213420221 is a wasteful number, since it uses less digits than its factorization.

2440213420221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199282 (or 199276 counting only the distinct ones).

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

Adding to 2440213420221 its reverse (1220243120442), we get a palindrome (3660456540663).

The spelling of 2440213420221 in words is "two trillion, four hundred forty billion, two hundred thirteen million, four hundred twenty thousand, two hundred twenty-one".