211121020220012 has 96 divisors (see below), whose sum is σ = 435191133888000. Its totient is φ = 89571923321664.

The previous prime is 211121020220009. The next prime is 211121020220093. The reversal of 211121020220012 is 210022020121112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208985414 + ... + 209993202.

It is an arithmetic number, because the mean of its divisors is an integer number (4533240978000).

Almost surely, 2^{211121020220012} 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 211121020220012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217595566944000).

211121020220012 is an abundant number, since it is smaller than the sum of its proper divisors (224070113667988).

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

211121020220012 is a wasteful number, since it uses less digits than its factorization.

211121020220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009348 (or 1009332 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211121020220012 its reverse (210022020121112), we get a palindrome (421143040341124).

The spelling of 211121020220012 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty million, two hundred twenty thousand, twelve".