21111324202203 has 16 divisors (see below), whose sum is σ = 28769625190656. Its totient is φ = 13766977474400.

The previous prime is 21111324202181. The next prime is 21111324202271. The reversal of 21111324202203 is 30220242311112.

It is a cyclic number.

It is not a de Polignac number, because 21111324202203 - 2¹³ = 21111324194011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111324202403) 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, 419699775 + ... + 419750072.

It is an arithmetic number, because the mean of its divisors is an integer number (1798101574416).

Almost surely, 2^{21111324202203} is an apocalyptic number.

21111324202203 is a deficient number, since it is larger than the sum of its proper divisors (7658300988453).

21111324202203 is a wasteful number, since it uses less digits than its factorization.

21111324202203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839450034.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21111324202203 its reverse (30220242311112), we get a palindrome (51331566513315).

The spelling of 21111324202203 in words is "twenty-one trillion, one hundred eleven billion, three hundred twenty-four million, two hundred two thousand, two hundred three".