111221031329137 has 2 divisors, whose sum is σ = 111221031329138. Its totient is φ = 111221031329136.

The previous prime is 111221031329129. The next prime is 111221031329167. The reversal of 111221031329137 is 731923130122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104480615923776 + 6740415405361 = 10221576^2 + 2596231^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221031329137 - 2³ = 111221031329129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111221031329096 and 111221031329105.

It is not a weakly prime, because it can be changed into another prime (111221031329167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610515664568 + 55610515664569.

It is an arithmetic number, because the mean of its divisors is an integer number (55610515664569).

Almost surely, 2^{111221031329137} is an apocalyptic number.

It is an amenable number.

111221031329137 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221031329137 is an equidigital number, since it uses as much as digits as its factorization.

111221031329137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 111221031329137 in words is "one hundred eleven trillion, two hundred twenty-one billion, thirty-one million, three hundred twenty-nine thousand, one hundred thirty-seven".