211211101221112 has 32 divisors (see below), whose sum is σ = 396444137443200. Its totient is φ = 105492704844384.

The previous prime is 211211101221089. The next prime is 211211101221149. The reversal of 211211101221112 is 211122101112112.

It is a super-2 number, since 2×211211101221112² (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 211211101221112.

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, 39486439 + ... + 44515177.

It is an arithmetic number, because the mean of its divisors is an integer number (12388879295100).

Almost surely, 2^{211211101221112} is an apocalyptic number.

It is an amenable number.

211211101221112 is a deficient number, since it is larger than the sum of its proper divisors (185233036222088).

211211101221112 is a wasteful number, since it uses less digits than its factorization.

211211101221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5034355 (or 5034351 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211211101221112 its reverse (211122101112112), we get a palindrome (422333202333224).

The spelling of 211211101221112 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred one million, two hundred twenty-one thousand, one hundred twelve".