21344430133334 has 24 divisors (see below), whose sum is σ = 40629657361608. Its totient is φ = 8316011739840.

The previous prime is 21344430133261. The next prime is 21344430133457. The reversal of 21344430133334 is 43333103444312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9900012899 + ... + 9900015054.

It is an arithmetic number, because the mean of its divisors is an integer number (1692902390067).

Almost surely, 2^{21344430133334} is an apocalyptic number.

21344430133334 is a deficient number, since it is larger than the sum of its proper divisors (19285227228274).

21344430133334 is a wasteful number, since it uses less digits than its factorization.

21344430133334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19800027980 (or 19800027973 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 38.

Adding to 21344430133334 its reverse (43333103444312), we get a palindrome (64677533577646).

The spelling of 21344430133334 in words is "twenty-one trillion, three hundred forty-four billion, four hundred thirty million, one hundred thirty-three thousand, three hundred thirty-four".