111120121121211 has 6 divisors (see below), whose sum is σ = 160506841619540. Its totient is φ = 74080080747468.

The previous prime is 111120121121209. The next prime is 111120121121213. The reversal of 111120121121211 is 112121121021111.

111120121121211 is a `hidden beast` number, since 1 + 111 + 201 + 21 + 121 + 211 = 666.

It is an interprime number because it is at equal distance from previous prime (111120121121209) and next prime (111120121121213).

It is not a de Polignac number, because 111120121121211 - 2¹ = 111120121121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111120121121213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6173340062281 + ... + 6173340062298.

Almost surely, 2^{111120121121211} is an apocalyptic number.

111120121121211 is a deficient number, since it is larger than the sum of its proper divisors (49386720498329).

111120121121211 is a wasteful number, since it uses less digits than its factorization.

111120121121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12346680124585 (or 12346680124582 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 111120121121211 its reverse (112121121021111), we get a palindrome (223241242142322).

The spelling of 111120121121211 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred eleven".