221121322111203 has 16 divisors (see below), whose sum is σ = 301516478860800. Its totient is φ = 144107140600800.

The previous prime is 221121322111171. The next prime is 221121322111213. The reversal of 221121322111203 is 302111223121122.

It is not a de Polignac number, because 221121322111203 - 2⁵ = 221121322111171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221121322111213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4618794673 + ... + 4618842546.

It is an arithmetic number, because the mean of its divisors is an integer number (18844779928800).

Almost surely, 2^{221121322111203} is an apocalyptic number.

221121322111203 is a deficient number, since it is larger than the sum of its proper divisors (80395156749597).

221121322111203 is a wasteful number, since it uses less digits than its factorization.

221121322111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9237637402.

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 221121322111203 its reverse (302111223121122), we get a palindrome (523232545232325).

The spelling of 221121322111203 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, three hundred twenty-two million, one hundred eleven thousand, two hundred three".