11002121111021 has 16 divisors (see below), whose sum is σ = 11111422358400. Its totient is φ = 10893259080000.

The previous prime is 11002121110951. The next prime is 11002121111077. The reversal of 11002121111021 is 12011112120011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002121111021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11002121110987 and 11002121111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002121113021) 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, 535346696 + ... + 535367246.

It is an arithmetic number, because the mean of its divisors is an integer number (694463897400).

Almost surely, 2^{11002121111021} is an apocalyptic number.

It is an amenable number.

11002121111021 is a deficient number, since it is larger than the sum of its proper divisors (109301247379).

11002121111021 is a wasteful number, since it uses less digits than its factorization.

11002121111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30980.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11002121111021 its reverse (12011112120011), we get a palindrome (23013233231032).

The spelling of 11002121111021 in words is "eleven trillion, two billion, one hundred twenty-one million, one hundred eleven thousand, twenty-one".