211121021111012 has 24 divisors (see below), whose sum is σ = 369713894793600. Its totient is φ = 105488484434496.

The previous prime is 211121021111003. The next prime is 211121021111029. The reversal of 211121021111012 is 210111120121112.

It is a super-3 number, since 3×211121021111012³ (a number of 44 digits) contains 333 as substring.

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, 184336064 + ... + 185477832.

It is an arithmetic number, because the mean of its divisors is an integer number (15404745616400).

Almost surely, 2^{211121021111012} is an apocalyptic number.

It is an amenable number.

211121021111012 is a deficient number, since it is larger than the sum of its proper divisors (158592873682588).

211121021111012 is a wasteful number, since it uses less digits than its factorization.

211121021111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173275 (or 1173273 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211121021111012 its reverse (210111120121112), we get a palindrome (421232141232124).

The spelling of 211121021111012 in words is "two hundred eleven trillion, one hundred twenty-one billion, twenty-one million, one hundred eleven thousand, twelve".