111221001149 has 2 divisors, whose sum is σ = 111221001150. Its totient is φ = 111221001148.

The previous prime is 111221001121. The next prime is 111221001179. The reversal of 111221001149 is 941100122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75644251225 + 35576749924 = 275035^2 + 188618^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221001149 - 2¹⁶ = 111220935613 is a prime.

It is a super-3 number, since 3×111221001149³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221001109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610500574 + 55610500575.

It is an arithmetic number, because the mean of its divisors is an integer number (55610500575).

Almost surely, 2^111221001149 is an apocalyptic number.

It is an amenable number.

111221001149 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221001149 is an equidigital number, since it uses as much as digits as its factorization.

111221001149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 111221001149 in words is "one hundred eleven billion, two hundred twenty-one million, one thousand, one hundred forty-nine".