111111010321 has 8 divisors (see below), whose sum is σ = 117111151080. Its totient is φ = 105255451392.

The previous prime is 111111010291. The next prime is 111111010331. The reversal of 111111010321 is 123010111111.

It can be written as a sum of positive squares in 4 ways, for example, as 42971217025 + 68139793296 = 207295^2 + 261036^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111111010321 - 2¹⁷ = 111110879249 is a prime.

It is a super-2 number, since 2×111111010321² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111111010331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36143880 + ... + 36146953.

It is an arithmetic number, because the mean of its divisors is an integer number (14638893885).

Almost surely, 2^111111010321 is an apocalyptic number.

It is an amenable number.

111111010321 is a deficient number, since it is larger than the sum of its proper divisors (6000140759).

111111010321 is an equidigital number, since it uses as much as digits as its factorization.

111111010321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72290915.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 111111010321 its reverse (123010111111), we get a palindrome (234121121432).

The spelling of 111111010321 in words is "one hundred eleven billion, one hundred eleven million, ten thousand, three hundred twenty-one".