212013021230 has 48 divisors (see below), whose sum is σ = 406971200016. Its totient is φ = 79505817600.

The previous prime is 212013021229. The next prime is 212013021257. The reversal of 212013021230 is 32120310212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 212013021199 and 212013021208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 600005 + ... + 885455.

It is an arithmetic number, because the mean of its divisors is an integer number (8478566667).

Almost surely, 2^212013021230 is an apocalyptic number.

212013021230 is a deficient number, since it is larger than the sum of its proper divisors (194958178786).

212013021230 is a wasteful number, since it uses less digits than its factorization.

212013021230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285749 (or 285732 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212013021230 its reverse (32120310212), we get a palindrome (244133331442).

The spelling of 212013021230 in words is "two hundred twelve billion, thirteen million, twenty-one thousand, two hundred thirty".