21111324142304 has 24 divisors (see below), whose sum is σ = 45341366624568. Its totient is φ = 9596056428160.

The previous prime is 21111324142291. The next prime is 21111324142343. The reversal of 21111324142304 is 40324142311112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29987675987 + ... + 29987676690.

It is an arithmetic number, because the mean of its divisors is an integer number (1889223609357).

Almost surely, 2^{21111324142304} is an apocalyptic number.

It is an amenable number.

21111324142304 is an abundant number, since it is smaller than the sum of its proper divisors (24230042482264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21111324142304 is a wasteful number, since it uses less digits than its factorization.

21111324142304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59975352698 (or 59975352690 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 21111324142304 its reverse (40324142311112), we get a palindrome (61435466453416).

The spelling of 21111324142304 in words is "twenty-one trillion, one hundred eleven billion, three hundred twenty-four million, one hundred forty-two thousand, three hundred four".