211121200100012 has 48 divisors (see below), whose sum is σ = 385678608579264. Its totient is φ = 100930959360000.

The previous prime is 211121200100003. The next prime is 211121200100023. The reversal of 211121200100012 is 210001002121112.

It is a super-2 number, since 2×211121200100012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211121200100012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4081898312 + ... + 4081950032.

It is an arithmetic number, because the mean of its divisors is an integer number (8034971012068).

Almost surely, 2^{211121200100012} is an apocalyptic number.

It is an amenable number.

211121200100012 is a deficient number, since it is larger than the sum of its proper divisors (174557408479252).

211121200100012 is a wasteful number, since it uses less digits than its factorization.

211121200100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68490 (or 68488 counting only the distinct ones).

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

Adding to 211121200100012 its reverse (210001002121112), we get a palindrome (421122202221124).

The spelling of 211121200100012 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred million, one hundred thousand, twelve".