211021121212 has 24 divisors (see below), whose sum is σ = 403188008832. Its totient is φ = 95840238000.

The previous prime is 211021121209. The next prime is 211021121293. The reversal of 211021121212 is 212121120112.

211021121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1906914 + ... + 2014537.

It is an arithmetic number, because the mean of its divisors is an integer number (16799500368).

Almost surely, 2^211021121212 is an apocalyptic number.

211021121212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211021121212 is a deficient number, since it is larger than the sum of its proper divisors (192166887620).

211021121212 is a wasteful number, since it uses less digits than its factorization.

211021121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922689 (or 3922687 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211021121212 its reverse (212121120112), we get a palindrome (423142241324).

It can be divided in two parts, 211021 and 121212, that added together give a palindrome (332233).

The spelling of 211021121212 in words is "two hundred eleven billion, twenty-one million, one hundred twenty-one thousand, two hundred twelve".