21245131409324 has 48 divisors (see below), whose sum is σ = 38645134240608. Its totient is φ = 10214277562368.

The previous prime is 21245131409303. The next prime is 21245131409417. The reversal of 21245131409324 is 42390413154212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3699869 + ... + 7495284.

It is an arithmetic number, because the mean of its divisors is an integer number (805106963346).

Almost surely, 2^{21245131409324} is an apocalyptic number.

It is an amenable number.

21245131409324 is a deficient number, since it is larger than the sum of its proper divisors (17400002831284).

21245131409324 is a wasteful number, since it uses less digits than its factorization.

21245131409324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11195394 (or 11195392 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 21245131409324 in words is "twenty-one trillion, two hundred forty-five billion, one hundred thirty-one million, four hundred nine thousand, three hundred twenty-four".