21252929422804 has 24 divisors (see below), whose sum is σ = 37806481944000. Its totient is φ = 10451791848960.

The previous prime is 21252929422717. The next prime is 21252929422841. The reversal of 21252929422804 is 40822492925212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89182029 + ... + 89420020.

It is an arithmetic number, because the mean of its divisors is an integer number (1575270081000).

Almost surely, 2^{21252929422804} is an apocalyptic number.

It is an amenable number.

21252929422804 is a deficient number, since it is larger than the sum of its proper divisors (16553552521196).

21252929422804 is a wasteful number, since it uses less digits than its factorization.

21252929422804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178602543 (or 178602541 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 21252929422804 in words is "twenty-one trillion, two hundred fifty-two billion, nine hundred twenty-nine million, four hundred twenty-two thousand, eight hundred four".