212103321320 has 64 divisors (see below), whose sum is σ = 551241806400. Its totient is φ = 72591508480.

The previous prime is 212103321301. The next prime is 212103321323. The reversal of 212103321320 is 23123301212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 212103321292 and 212103321301.

It is not an unprimeable number, because it can be changed into a prime (212103321323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14170550 + ... + 14185509.

It is an arithmetic number, because the mean of its divisors is an integer number (8613153225).

Almost surely, 2^212103321320 is an apocalyptic number.

212103321320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212103321320 is an abundant number, since it is smaller than the sum of its proper divisors (339138485080).

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

212103321320 is a wasteful number, since it uses less digits than its factorization.

212103321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28356098 (or 28356094 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212103321320 its reverse (23123301212), we get a palindrome (235226622532).

The spelling of 212103321320 in words is "two hundred twelve billion, one hundred three million, three hundred twenty-one thousand, three hundred twenty".