211121221001112 has 48 divisors (see below), whose sum is σ = 587240333197440. Its totient is φ = 68471747350848.

The previous prime is 211121221001083. The next prime is 211121221001113. The reversal of 211121221001112 is 211100122121112.

It is a happy number.

211121221001112 is a `hidden beast` number, since 211 + 121 + 221 + 0 + 0 + 1 + 112 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121221001113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39624851128 + ... + 39624856455.

It is an arithmetic number, because the mean of its divisors is an integer number (12234173608280).

Almost surely, 2^{211121221001112} is an apocalyptic number.

It is an amenable number.

211121221001112 is an abundant number, since it is smaller than the sum of its proper divisors (376119112196328).

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

211121221001112 is a wasteful number, since it uses less digits than its factorization.

211121221001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79249707632 (or 79249707625 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 211121221001112 its reverse (211100122121112), we get a palindrome (422221343122224).

The spelling of 211121221001112 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twenty-one million, one thousand, one hundred twelve".