211111022021268 has 96 divisors (see below), whose sum is σ = 535283510272000. Its totient is φ = 64511423360640.

The previous prime is 211111022021267. The next prime is 211111022021281. The reversal of 211111022021268 is 862120220111112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211111022021267) by changing a digit.

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, 97020738 + ... + 99172806.

Almost surely, 2^{211111022021268} 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 211111022021268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267641755136000).

211111022021268 is an abundant number, since it is smaller than the sum of its proper divisors (324172488250732).

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

211111022021268 is a wasteful number, since it uses less digits than its factorization.

211111022021268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166005 (or 2166003 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 30.

The spelling of 211111022021268 in words is "two hundred eleven trillion, one hundred eleven billion, twenty-two million, twenty-one thousand, two hundred sixty-eight".