111101112123321 has 48 divisors (see below), whose sum is σ = 158006324023296. Its totient is φ = 69425884108512.

The previous prime is 111101112123289. The next prime is 111101112123343. The reversal of 111101112123321 is 123321211101111.

It is not a de Polignac number, because 111101112123321 - 2⁵ = 111101112123289 is a prime.

It is a super-2 number, since 2×111101112123321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111101112123371) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37954836 + ... + 40777098.

It is an arithmetic number, because the mean of its divisors is an integer number (3291798417152).

Almost surely, 2^{111101112123321} is an apocalyptic number.

It is an amenable number.

111101112123321 is a deficient number, since it is larger than the sum of its proper divisors (46905211899975).

111101112123321 is a wasteful number, since it uses less digits than its factorization.

111101112123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822690 (or 2822671 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 21.

Adding to 111101112123321 its reverse (123321211101111), we get a palindrome (234422323224432).

The spelling of 111101112123321 in words is "one hundred eleven trillion, one hundred one billion, one hundred twelve million, one hundred twenty-three thousand, three hundred twenty-one".