21210231022832 has 40 divisors (see below), whose sum is σ = 41160249987600. Its totient is φ = 10588243663872.

The previous prime is 21210231022831. The next prime is 21210231022837. The reversal of 21210231022832 is 23822013201212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21210231022795 and 21210231022804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210231022831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26550743 + ... + 27337929.

It is an arithmetic number, because the mean of its divisors is an integer number (1029006249690).

Almost surely, 2^{21210231022832} is an apocalyptic number.

It is an amenable number.

21210231022832 is a deficient number, since it is larger than the sum of its proper divisors (19950018964768).

21210231022832 is a wasteful number, since it uses less digits than its factorization.

21210231022832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789873 (or 789867 counting only the distinct ones).

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

The spelling of 21210231022832 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty-one million, twenty-two thousand, eight hundred thirty-two".