211121001212 has 24 divisors (see below), whose sum is σ = 411624702720. Its totient is φ = 93922301360.

The previous prime is 211121001163. The next prime is 211121001251. The reversal of 211121001212 is 212100121112.

211121001212 is digitally balanced in base 3, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51042662 + ... + 51046797.

It is an arithmetic number, because the mean of its divisors is an integer number (17151029280).

Almost surely, 2^211121001212 is an apocalyptic number.

211121001212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211121001212 is a deficient number, since it is larger than the sum of its proper divisors (200503701508).

211121001212 is a wasteful number, since it uses less digits than its factorization.

211121001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102089521 (or 102089519 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211121001212 its reverse (212100121112), we get a palindrome (423221122324).

The spelling of 211121001212 in words is "two hundred eleven billion, one hundred twenty-one million, one thousand, two hundred twelve".