221400241444 has 6 divisors (see below), whose sum is σ = 387450422534. Its totient is φ = 110700120720.

The previous prime is 221400241427. The next prime is 221400241457. The reversal of 221400241444 is 444142004122.

It is a happy number.

221400241444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 213571531044 + 7828710400 = 462138^2 + 88480^2 .

It is a super-2 number, since 2×221400241444² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27675030177 + ... + 27675030184.

Almost surely, 2^221400241444 is an apocalyptic number.

It is an amenable number.

221400241444 is a deficient number, since it is larger than the sum of its proper divisors (166050181090).

221400241444 is a wasteful number, since it uses less digits than its factorization.

221400241444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55350060365 (or 55350060363 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 221400241444 its reverse (444142004122), we get a palindrome (665542245566).

The spelling of 221400241444 in words is "two hundred twenty-one billion, four hundred million, two hundred forty-one thousand, four hundred forty-four".