211322121000 has 128 divisors (see below), whose sum is σ = 698109010560. Its totient is φ = 53037696000.

The previous prime is 211322120959. The next prime is 211322121001. The reversal of 211322121000 is 121223112.

211322121000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (211322121001) 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, 2020786 + ... + 2122785.

It is an arithmetic number, because the mean of its divisors is an integer number (5453976645).

Almost surely, 2^211322121000 is an apocalyptic number.

211322121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211322121000 is an abundant number, since it is smaller than the sum of its proper divisors (486786889560).

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

211322121000 is a wasteful number, since it uses less digits than its factorization.

211322121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143612 (or 4143598 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211322121000 its reverse (121223112), we get a palindrome (211443344112).

The spelling of 211322121000 in words is "two hundred eleven billion, three hundred twenty-two million, one hundred twenty-one thousand".