212221101230 has 24 divisors (see below), whose sum is σ = 405790249608. Its totient is φ = 79895001728.

The previous prime is 212221101227. The next prime is 212221101251. The reversal of 212221101230 is 32101122212.

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 = 212221101199 and 212221101208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36713564 + ... + 36719343.

It is an arithmetic number, because the mean of its divisors is an integer number (16907927067).

Almost surely, 2^212221101230 is an apocalyptic number.

212221101230 is a deficient number, since it is larger than the sum of its proper divisors (193569148378).

212221101230 is a wasteful number, since it uses less digits than its factorization.

212221101230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73432948 (or 73432931 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212221101230 its reverse (32101122212), we get a palindrome (244322223442).

The spelling of 212221101230 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred one thousand, two hundred thirty".