213626121320 has 16 divisors (see below), whose sum is σ = 480658773060. Its totient is φ = 85450448512.

The previous prime is 213626121301. The next prime is 213626121367. The reversal of 213626121320 is 23121626312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 213076406404 + 549714916 = 461602^2 + 23446^2 .

It is a super-2 number, since 2×213626121320² (a number of 23 digits) contains 22 as substring.

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, 2670326477 + ... + 2670326556.

Almost surely, 2^213626121320 is an apocalyptic number.

213626121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213626121320 is an abundant number, since it is smaller than the sum of its proper divisors (267032651740).

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

213626121320 is a wasteful number, since it uses less digits than its factorization.

213626121320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340653044 (or 5340653040 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 213626121320 its reverse (23121626312), we get a palindrome (236747747632).

The spelling of 213626121320 in words is "two hundred thirteen billion, six hundred twenty-six million, one hundred twenty-one thousand, three hundred twenty".