1100221123 has 8 divisors (see below), whose sum is σ = 1149926400. Its totient is φ = 1050671688.

The previous prime is 1100221097. The next prime is 1100221127. The reversal of 1100221123 is 3211220011.

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 1100221123 - 2²⁹ = 563350211 is a prime.

It is a super-2 number, since 2×1100221123² = 2420973038990762258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1100221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24403 + ... + 52876.

It is an arithmetic number, because the mean of its divisors is an integer number (143740800).

Almost surely, 2^1100221123 is an apocalyptic number.

1100221123 is a deficient number, since it is larger than the sum of its proper divisors (49705277).

1100221123 is an equidigital number, since it uses as much as digits as its factorization.

1100221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77921.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1100221123 is about 33169.5812906946. The cubic root of 1100221123 is about 1032.3492807844.

Adding to 1100221123 its reverse (3211220011), we get a palindrome (4311441134).

The spelling of 1100221123 in words is "one billion, one hundred million, two hundred twenty-one thousand, one hundred twenty-three".