111020230211 has 4 divisors (see below), whose sum is σ = 121112978424. Its totient is φ = 100927482000.

The previous prime is 111020230199. The next prime is 111020230249. The reversal of 111020230211 is 112032020111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020230211 is a prime.

It is a super-2 number, since 2×111020230211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020230291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5046374090 + ... + 5046374111.

It is an arithmetic number, because the mean of its divisors is an integer number (30278244606).

Almost surely, 2^111020230211 is an apocalyptic number.

111020230211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111020230211 is a deficient number, since it is larger than the sum of its proper divisors (10092748213).

111020230211 is a wasteful number, since it uses less digits than its factorization.

111020230211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092748212.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 111020230211 its reverse (112032020111), we get a palindrome (223052250322).

The spelling of 111020230211 in words is "one hundred eleven billion, twenty million, two hundred thirty thousand, two hundred eleven".