220440020444 has 12 divisors (see below), whose sum is σ = 440880040944. Its totient is φ = 94474294464.

The previous prime is 220440020401. The next prime is 220440020461. The reversal of 220440020444 is 444020044022.

220440020444 is an admirable number.

It is a super-2 number, since 2×220440020444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3936428909 + ... + 3936428964.

It is an arithmetic number, because the mean of its divisors is an integer number (36740003412).

Almost surely, 2^220440020444 is an apocalyptic number.

It is an amenable number.

220440020444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220440020444 is a wasteful number, since it uses less digits than its factorization.

220440020444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7872857884 (or 7872857882 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 220440020444 its reverse (444020044022), we get a palindrome (664460064466).

The spelling of 220440020444 in words is "two hundred twenty billion, four hundred forty million, twenty thousand, four hundred forty-four".