21213102011320 has 32 divisors (see below), whose sum is σ = 47730542800320. Its totient is φ = 8485051777920.

The previous prime is 21213102011287. The next prime is 21213102011341. The reversal of 21213102011320 is 2311020131212.

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, 4082112 + ... + 7686991.

It is an arithmetic number, because the mean of its divisors is an integer number (1491579462510).

Almost surely, 2^{21213102011320} is an apocalyptic number.

21213102011320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21213102011320 is an abundant number, since it is smaller than the sum of its proper divisors (26517440789000).

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

21213102011320 is a wasteful number, since it uses less digits than its factorization.

21213102011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11814175 (or 11814171 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21213102011320 its reverse (2311020131212), we get a palindrome (23524122142532).

The spelling of 21213102011320 in words is "twenty-one trillion, two hundred thirteen billion, one hundred two million, eleven thousand, three hundred twenty".