1111221123 has 8 divisors (see below), whose sum is σ = 1482168336. Its totient is φ = 740544000.

The previous prime is 1111221119. The next prime is 1111221157. The reversal of 1111221123 is 3211221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111221123 - 2² = 1111221119 is a prime.

It is a super-2 number, since 2×1111221123² = 2469624768402762258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111221113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57718 + ... + 74523.

It is an arithmetic number, because the mean of its divisors is an integer number (185271042).

Almost surely, 2^1111221123 is an apocalyptic number.

1111221123 is a deficient number, since it is larger than the sum of its proper divisors (370947213).

1111221123 is a wasteful number, since it uses less digits than its factorization.

1111221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135045.

The product of its digits is 24, while the sum is 15.

The square root of 1111221123 is about 33334.9834708224. The cubic root of 1111221123 is about 1035.7783507749.

Adding to 1111221123 its reverse (3211221111), we get a palindrome (4322442234).

The spelling of 1111221123 in words is "one billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twenty-three".