111221021299 has 24 divisors (see below), whose sum is σ = 116781352688. Its totient is φ = 105908705280.

The previous prime is 111221021231. The next prime is 111221021339. The reversal of 111221021299 is 992120122111.

It is not a de Polignac number, because 111221021299 - 2⁹ = 111221020787 is a prime.

It is a super-2 number, since 2×111221021299² (a number of 23 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 111221021299.

It is not an unprimeable number, because it can be changed into a prime (111221022299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25041919 + ... + 25046359.

Almost surely, 2^111221021299 is an apocalyptic number.

111221021299 is a deficient number, since it is larger than the sum of its proper divisors (5560331389).

111221021299 is an equidigital number, since it uses as much as digits as its factorization.

111221021299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903 (or 4874 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 111221021299 in words is "one hundred eleven billion, two hundred twenty-one million, twenty-one thousand, two hundred ninety-nine".