111121010120211 has 48 divisors (see below), whose sum is σ = 187343381481984. Its totient is φ = 58065492292416.

The previous prime is 111121010120201. The next prime is 111121010120333. The reversal of 111121010120211 is 112021010121111.

It is not a de Polignac number, because 111121010120211 - 2⁹ = 111121010119699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111121010120201) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 271515595 + ... + 271924548.

It is an arithmetic number, because the mean of its divisors is an integer number (3902987114208).

Almost surely, 2^{111121010120211} is an apocalyptic number.

111121010120211 is a deficient number, since it is larger than the sum of its proper divisors (76222371361773).

111121010120211 is a wasteful number, since it uses less digits than its factorization.

111121010120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543440280 (or 543440273 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111121010120211 its reverse (112021010121111), we get a palindrome (223142020241322).

The spelling of 111121010120211 in words is "one hundred eleven trillion, one hundred twenty-one billion, ten million, one hundred twenty thousand, two hundred eleven".