212021012212212 has 192 divisors, whose sum is σ = 618064634880000. Its totient is φ = 55194603061248.

The previous prime is 212021012212189. The next prime is 212021012212213. The reversal of 212021012212212 is 212212210120212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021012212213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2982789 + ... + 20807187.

It is an arithmetic number, because the mean of its divisors is an integer number (3219086640000).

Almost surely, 2^{212021012212212} 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 212021012212212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309032317440000).

212021012212212 is an abundant number, since it is smaller than the sum of its proper divisors (406043622667788).

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

212021012212212 is a wasteful number, since it uses less digits than its factorization.

212021012212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17824718 (or 17824716 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212021012212212 its reverse (212212210120212), we get a palindrome (424233222332424).

The spelling of 212021012212212 in words is "two hundred twelve trillion, twenty-one billion, twelve million, two hundred twelve thousand, two hundred twelve".