212121020230112 has 96 divisors (see below), whose sum is σ = 479778565742784. Its totient is φ = 90432715161600.

The previous prime is 212121020230039. The next prime is 212121020230169. The reversal of 212121020230112 is 211032020121212.

It is a super-3 number, since 3×212121020230112³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34484312 + ... + 40167272.

It is an arithmetic number, because the mean of its divisors is an integer number (4997693393154).

Almost surely, 2^{212121020230112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212121020230112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239889282871392).

212121020230112 is an abundant number, since it is smaller than the sum of its proper divisors (267657545512672).

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

212121020230112 is a wasteful number, since it uses less digits than its factorization.

212121020230112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5683852 (or 5683844 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 212121020230112 its reverse (211032020121212), we get a palindrome (423153040351324).

The spelling of 212121020230112 in words is "two hundred twelve trillion, one hundred twenty-one billion, twenty million, two hundred thirty thousand, one hundred twelve".