210212121012012 has 384 divisors, whose sum is σ = 641287614965760. Its totient is φ = 58298019840000.

The previous prime is 210212121012007. The next prime is 210212121012059. The reversal of 210212121012012 is 210210121212012.

210212121012012 is a `hidden beast` number, since 210 + 2 + 121 + 210 + 120 + 1 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11264773962 + ... + 11264792622.

It is an arithmetic number, because the mean of its divisors is an integer number (1670019830640).

Almost surely, 2^{210212121012012} 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 210212121012012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320643807482880).

210212121012012 is an abundant number, since it is smaller than the sum of its proper divisors (431075493953748).

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

210212121012012 is a wasteful number, since it uses less digits than its factorization.

210212121012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550 (or 20542 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210212121012012 its reverse (210210121212012), we get a palindrome (420422242224024).

The spelling of 210212121012012 in words is "two hundred ten trillion, two hundred twelve billion, one hundred twenty-one million, twelve thousand, twelve".