111221233122131 has 24 divisors (see below), whose sum is σ = 122940637480752. Its totient is φ = 100540322625600.

The previous prime is 111221233122079. The next prime is 111221233122133. The reversal of 111221233122131 is 131221332122111.

It is not a de Polignac number, because 111221233122131 - 2¹⁸ = 111221232859987 is a prime.

It is a super-2 number, since 2×111221233122131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111221233122131.

It is not an unprimeable number, because it can be changed into a prime (111221233122133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198296321 + ... + 198856413.

It is an arithmetic number, because the mean of its divisors is an integer number (5122526561698).

Almost surely, 2^{111221233122131} is an apocalyptic number.

111221233122131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111221233122131 is a deficient number, since it is larger than the sum of its proper divisors (11719404358621).

111221233122131 is a wasteful number, since it uses less digits than its factorization.

111221233122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569363 (or 569352 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

Adding to 111221233122131 its reverse (131221332122111), we get a palindrome (242442565244242).

The spelling of 111221233122131 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred thirty-three million, one hundred twenty-two thousand, one hundred thirty-one".