212121120211000 has 2048 divisors, whose sum is σ = 708418493153280. Its totient is φ = 57328128000000.

The previous prime is 212121120210983. The next prime is 212121120211009. The reversal of 212121120211000 is 112021121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121120211009) by changing a digit.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 166108942362 + ... + 166108943638.

It is an arithmetic number, because the mean of its divisors is an integer number (345907467360).

Almost surely, 2^{212121120211000} is an apocalyptic number.

212121120211000 is a gapful number since it is divisible by the number (20) 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 212121120211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354209246576640).

212121120211000 is an abundant number, since it is smaller than the sum of its proper divisors (496297372942280).

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

212121120211000 is a wasteful number, since it uses less digits than its factorization.

212121120211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212121120211000 its reverse (112021121212), we get a palindrome (212233141332212).

The spelling of 212121120211000 in words is "two hundred twelve trillion, one hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand".