221211310013044 has 24 divisors (see below), whose sum is σ = 416900879444448. Its totient is φ = 102096880838880.

The previous prime is 221211310013021. The next prime is 221211310013101. The reversal of 221211310013044 is 440310013112122.

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 7 ways as a sum of consecutive naturals, for example, 5140762 + ... + 21652945.

It is an arithmetic number, because the mean of its divisors is an integer number (17370869976852).

Almost surely, 2^{221211310013044} is an apocalyptic number.

It is an amenable number.

221211310013044 is a deficient number, since it is larger than the sum of its proper divisors (195689569431404).

221211310013044 is a wasteful number, since it uses less digits than its factorization.

221211310013044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26952495 (or 26952493 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 221211310013044 its reverse (440310013112122), we get a palindrome (661521323125166).

The spelling of 221211310013044 in words is "two hundred twenty-one trillion, two hundred eleven billion, three hundred ten million, thirteen thousand, forty-four".