11002221123 has 8 divisors (see below), whose sum is σ = 14846371008. Its totient is φ = 7246442664.

The previous prime is 11002221121. The next prime is 11002221127. The reversal of 11002221123 is 32112220011.

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

It is not a de Polignac number, because 11002221123 - 2¹ = 11002221121 is a prime.

It is a super-2 number, since 2×11002221123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11002221121) 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, 22092565 + ... + 22093062.

It is an arithmetic number, because the mean of its divisors is an integer number (1855796376).

Almost surely, 2^11002221123 is an apocalyptic number.

11002221123 is a deficient number, since it is larger than the sum of its proper divisors (3844149885).

11002221123 is an equidigital number, since it uses as much as digits as its factorization.

11002221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44185713.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11002221123 its reverse (32112220011), we get a palindrome (43114441134).

The spelling of 11002221123 in words is "eleven billion, two million, two hundred twenty-one thousand, one hundred twenty-three".