21302212312120 has 32 divisors (see below), whose sum is σ = 47994835654800. Its totient is φ = 8509354622208.

The previous prime is 21302212312111. The next prime is 21302212312231. The reversal of 21302212312120 is 2121321220312.

It is a junction number, because it is equal to n+sod(n) for n = 21302212312091 and 21302212312100.

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, 360292029 + ... + 360351148.

Almost surely, 2^{21302212312120} is an apocalyptic number.

21302212312120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302212312120 is an abundant number, since it is smaller than the sum of its proper divisors (26692623342680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21302212312120 is a wasteful number, since it uses less digits than its factorization.

21302212312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720643927 (or 720643923 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21302212312120 its reverse (2121321220312), we get a palindrome (23423533532432).

The spelling of 21302212312120 in words is "twenty-one trillion, three hundred two billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty".