21111324202204 has 48 divisors (see below), whose sum is σ = 37594743943680. Its totient is φ = 10371089041920.

The previous prime is 21111324202181. The next prime is 21111324202271. The reversal of 21111324202204 is 40220242311112.

It is a congruent number.

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, 1161165994 + ... + 1161184174.

It is an arithmetic number, because the mean of its divisors is an integer number (783223832160).

Almost surely, 2^{21111324202204} is an apocalyptic number.

It is an amenable number.

21111324202204 is a deficient number, since it is larger than the sum of its proper divisors (16483419741476).

21111324202204 is a wasteful number, since it uses less digits than its factorization.

21111324202204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33310 (or 33308 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21111324202204 its reverse (40220242311112), we get a palindrome (61331566513316).

The spelling of 21111324202204 in words is "twenty-one trillion, one hundred eleven billion, three hundred twenty-four million, two hundred two thousand, two hundred four".