111201021111123 has 40 divisors (see below), whose sum is σ = 167358931634400. Its totient is φ = 73579685541120.

The previous prime is 111201021111109. The next prime is 111201021111149. The reversal of 111201021111123 is 321111120102111.

It is not a de Polignac number, because 111201021111123 - 2⁴ = 111201021111107 is a prime.

It is a super-2 number, since 2×111201021111123² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111201021111096 and 111201021111105.

It is not an unprimeable number, because it can be changed into a prime (111201021111023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12101538 + ... + 19205448.

It is an arithmetic number, because the mean of its divisors is an integer number (4183973290860).

Almost surely, 2^{111201021111123} is an apocalyptic number.

111201021111123 is a deficient number, since it is larger than the sum of its proper divisors (56157910523277).

111201021111123 is a wasteful number, since it uses less digits than its factorization.

111201021111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105369 (or 7105360 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 111201021111123 its reverse (321111120102111), we get a palindrome (432312141213234).

The spelling of 111201021111123 in words is "one hundred eleven trillion, two hundred one billion, twenty-one million, one hundred eleven thousand, one hundred twenty-three".