211005121112 has 16 divisors (see below), whose sum is σ = 396273762600. Its totient is φ = 105332117760.

The previous prime is 211005121087. The next prime is 211005121139. The reversal of 211005121112 is 211121500112.

It is a super-2 number, since 2×211005121112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21300089 + ... + 21309992.

Almost surely, 2^211005121112 is an apocalyptic number.

It is an amenable number.

211005121112 is a deficient number, since it is larger than the sum of its proper divisors (185268641488).

211005121112 is a wasteful number, since it uses less digits than its factorization.

211005121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42610706 (or 42610702 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 211005121112 its reverse (211121500112), we get a palindrome (422126621224).

The spelling of 211005121112 in words is "two hundred eleven billion, five million, one hundred twenty-one thousand, one hundred twelve".