11002311021 has 16 divisors (see below), whose sum is σ = 15800153600. Its totient is φ = 6769811520.

The previous prime is 11002311013. The next prime is 11002311139. The reversal of 11002311021 is 12011320011.

It is not a de Polignac number, because 11002311021 - 2³ = 11002311013 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 = 11002310988 and 11002311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002311721) 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, 476655 + ... + 499203.

It is an arithmetic number, because the mean of its divisors is an integer number (987509600).

Almost surely, 2^11002311021 is an apocalyptic number.

It is an amenable number.

11002311021 is a deficient number, since it is larger than the sum of its proper divisors (4797842579).

11002311021 is a wasteful number, since it uses less digits than its factorization.

11002311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35076.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 11002311021 its reverse (12011320011), we get a palindrome (23013631032).

The spelling of 11002311021 in words is "eleven billion, two million, three hundred eleven thousand, twenty-one".