21134344314404 has 12 divisors (see below), whose sum is σ = 36985535960604. Its totient is φ = 10567048325664.

The previous prime is 21134344314397. The next prime is 21134344314469. The reversal of 21134344314404 is 40441344343112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12585749569600 + 8548594744804 = 3547640^2 + 2923798^2 .

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, 30573347 + ... + 31256970.

It is an arithmetic number, because the mean of its divisors is an integer number (3082127996717).

Almost surely, 2^{21134344314404} is an apocalyptic number.

It is an amenable number.

21134344314404 is a deficient number, since it is larger than the sum of its proper divisors (15851191646200).

21134344314404 is a wasteful number, since it uses less digits than its factorization.

21134344314404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61915774 (or 61915772 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 21134344314404 its reverse (40441344343112), we get a palindrome (61575688657516).

The spelling of 21134344314404 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred forty-four million, three hundred fourteen thousand, four hundred four".