11002121 has 8 divisors (see below), whose sum is σ = 12472320. Its totient is φ = 9621072.

The previous prime is 11002081. The next prime is 11002129. The reversal of 11002121 is 12120011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002099 and 11002108.

It is not an unprimeable number, because it can be changed into a prime (11002129) 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, 22025 + ... + 22518.

It is an arithmetic number, because the mean of its divisors is an integer number (1559040).

Almost surely, 2^11002121 is an apocalyptic number.

It is an amenable number.

11002121 is a deficient number, since it is larger than the sum of its proper divisors (1470199).

11002121 is a wasteful number, since it uses less digits than its factorization.

11002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44575.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 11002121 is about 3316.9445277243. The cubic root of 11002121 is about 222.4123022649.

Adding to 11002121 its reverse (12120011), we get a palindrome (23122132).

The spelling of 11002121 in words is "eleven million, two thousand, one hundred twenty-one".