21211130023320 has 128 divisors (see below), whose sum is σ = 64837736591040. Its totient is φ = 5549260554240.

The previous prime is 21211130023319. The next prime is 21211130023399. The reversal of 21211130023320 is 2332003111212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123406240 + ... + 123578000.

Almost surely, 2^{21211130023320} is an apocalyptic number.

21211130023320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21211130023320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32418868295520).

21211130023320 is an abundant number, since it is smaller than the sum of its proper divisors (43626606567720).

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

21211130023320 is a wasteful number, since it uses less digits than its factorization.

21211130023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191245 (or 191241 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21211130023320 its reverse (2332003111212), we get a palindrome (23543133134532).

The spelling of 21211130023320 in words is "twenty-one trillion, two hundred eleven billion, one hundred thirty million, twenty-three thousand, three hundred twenty".