212101231100 has 72 divisors (see below), whose sum is σ = 507743283600. Its totient is φ = 76261081600.

The previous prime is 212101231099. The next prime is 212101231171. The reversal of 212101231100 is 1132101212.

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, 985355 + ... + 1181154.

It is an arithmetic number, because the mean of its divisors is an integer number (7051990050).

Almost surely, 2^212101231100 is an apocalyptic number.

212101231100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101231100 is an abundant number, since it is smaller than the sum of its proper divisors (295642052500).

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

212101231100 is a wasteful number, since it uses less digits than its factorization.

212101231100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166623 (or 2166616 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212101231100 its reverse (1132101212), we get a palindrome (213233332312).

The spelling of 212101231100 in words is "two hundred twelve billion, one hundred one million, two hundred thirty-one thousand, one hundred".