220400420244 has 24 divisors (see below), whose sum is σ = 514275263040. Its totient is φ = 73465718784.

The previous prime is 220400420243. The next prime is 220400420249. The reversal of 220400420244 is 442024004022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220400420243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422417 + ... + 1569735.

It is an arithmetic number, because the mean of its divisors is an integer number (21428135960).

Almost surely, 2^220400420244 is an apocalyptic number.

It is an amenable number.

220400420244 is an abundant number, since it is smaller than the sum of its proper divisors (293874842796).

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

220400420244 is a wasteful number, since it uses less digits than its factorization.

220400420244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271999 (or 271997 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 220400420244 its reverse (442024004022), we get a palindrome (662424424266).

The spelling of 220400420244 in words is "two hundred twenty billion, four hundred million, four hundred twenty thousand, two hundred forty-four".