21211130313320 has 16 divisors (see below), whose sum is σ = 47725043205060. Its totient is φ = 8484452125312.

The previous prime is 21211130313319. The next prime is 21211130313337. The reversal of 21211130313320 is 2331303111212.

It can be written as a sum of positive squares in 2 ways, for example, as 20062928055556 + 1148202257764 = 4479166^2 + 1071542^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265139128877 + ... + 265139128956.

Almost surely, 2^{21211130313320} is an apocalyptic number.

21211130313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21211130313320 is an abundant number, since it is smaller than the sum of its proper divisors (26513912891740).

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

21211130313320 is a wasteful number, since it uses less digits than its factorization.

21211130313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530278257844 (or 530278257840 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21211130313320 its reverse (2331303111212), we get a palindrome (23542433424532).

The spelling of 21211130313320 in words is "twenty-one trillion, two hundred eleven billion, one hundred thirty million, three hundred thirteen thousand, three hundred twenty".