2111221153 has 8 divisors (see below), whose sum is σ = 2158918272. Its totient is φ = 2063639856.

The previous prime is 2111221127. The next prime is 2111221187. The reversal of 2111221153 is 3511221112.

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 2111221153 - 2⁹ = 2111220641 is a prime.

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 2111221153.

It is not an unprimeable number, because it can be changed into a prime (2111221103) 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 7 ways as a sum of consecutive naturals, for example, 8451 + ... + 65527.

It is an arithmetic number, because the mean of its divisors is an integer number (269864784).

Almost surely, 2^2111221153 is an apocalyptic number.

It is an amenable number.

2111221153 is a deficient number, since it is larger than the sum of its proper divisors (47697119).

2111221153 is an equidigital number, since it uses as much as digits as its factorization.

2111221153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57911.

The product of its digits is 120, while the sum is 19.

The square root of 2111221153 is about 45948.0266496832. The cubic root of 2111221153 is about 1282.8559993191.

Adding to 2111221153 its reverse (3511221112), we get a palindrome (5622442265).

It can be divided in two parts, 2 and 111221153, that added together give a triangular number (111221155 = T₁₄₉₁₄).

The spelling of 2111221153 in words is "two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred fifty-three".