221244441400042 has 32 divisors (see below), whose sum is σ = 335060701794000. Its totient is φ = 109564261790208.

The previous prime is 221244441400033. The next prime is 221244441400057. The reversal of 221244441400042 is 240004144442122.

221244441400042 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 8 ways, for example, as 27908514688201 + 193335926711841 = 5282851^2 + 13904529^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221244441399980 and 221244441400007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61391334 + ... + 64895182.

Almost surely, 2^{221244441400042} is an apocalyptic number.

221244441400042 is a deficient number, since it is larger than the sum of its proper divisors (113816260393958).

221244441400042 is a wasteful number, since it uses less digits than its factorization.

221244441400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504810.

The product of its (nonzero) digits is 65536, while the sum is 34.

Adding to 221244441400042 its reverse (240004144442122), we get a palindrome (461248585842164).

The spelling of 221244441400042 in words is "two hundred twenty-one trillion, two hundred forty-four billion, four hundred forty-one million, four hundred thousand, forty-two".