111203131111111 has 16 divisors (see below), whose sum is σ = 126095025047040. Its totient is φ = 97219620632160.

The previous prime is 111203131111099. The next prime is 111203131111117. The reversal of 111203131111111 is 111111131302111.

It is not a de Polignac number, because 111203131111111 - 2¹³ = 111203131102919 is a prime.

It is a super-2 number, since 2×111203131111111² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203131111117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61238035 + ... + 63027796.

It is an arithmetic number, because the mean of its divisors is an integer number (7880939065440).

Almost surely, 2^{111203131111111} is an apocalyptic number.

111203131111111 is a deficient number, since it is larger than the sum of its proper divisors (14891893935929).

111203131111111 is a wasteful number, since it uses less digits than its factorization.

111203131111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124269486.

The product of its (nonzero) digits is 18, while the sum is 19.

Adding to 111203131111111 its reverse (111111131302111), we get a palindrome (222314262413222).

The spelling of 111203131111111 in words is "one hundred eleven trillion, two hundred three billion, one hundred thirty-one million, one hundred eleven thousand, one hundred eleven".