212330011212 has 144 divisors (see below), whose sum is σ = 616683150720. Its totient is φ = 60921331200.

The previous prime is 212330011177. The next prime is 212330011247. The reversal of 212330011212 is 212110033212.

212330011212 is a `hidden beast` number, since 212 + 330 + 0 + 1 + 121 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (212330011177) and next prime (212330011247).

It is a super-2 number, since 2×212330011212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15123748 + ... + 15137780.

It is an arithmetic number, because the mean of its divisors is an integer number (4282521880).

Almost surely, 2^212330011212 is an apocalyptic number.

212330011212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212330011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308341575360).

212330011212 is an abundant number, since it is smaller than the sum of its proper divisors (404353139508).

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

212330011212 is a wasteful number, since it uses less digits than its factorization.

212330011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16084 (or 16079 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212330011212 its reverse (212110033212), we get a palindrome (424440044424).

The spelling of 212330011212 in words is "two hundred twelve billion, three hundred thirty million, eleven thousand, two hundred twelve".