11002021121 has 16 divisors (see below), whose sum is σ = 14337477504. Its totient is φ = 8192841984.

The previous prime is 11002021111. The next prime is 11002021127. The reversal of 11002021121 is 12112020011.

It is a cyclic number.

It is not a de Polignac number, because 11002021121 - 2¹⁴ = 11002004737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11002021127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3554375 + ... + 3557468.

It is an arithmetic number, because the mean of its divisors is an integer number (896092344).

Almost surely, 2^11002021121 is an apocalyptic number.

It is an amenable number.

11002021121 is a deficient number, since it is larger than the sum of its proper divisors (3335456383).

11002021121 is a wasteful number, since it uses less digits than its factorization.

11002021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111880.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11002021121 its reverse (12112020011), we get a palindrome (23114041132).

The spelling of 11002021121 in words is "eleven billion, two million, twenty-one thousand, one hundred twenty-one".