11203030021 has 8 divisors (see below), whose sum is σ = 11799298080. Its totient is φ = 10607425488.

The previous prime is 11203029961. The next prime is 11203030057. The reversal of 11203030021 is 12003030211.

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

It is not a de Polignac number, because 11203030021 - 2¹¹ = 11203027973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203029983 and 11203030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11203030621) 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, 131026 + ... + 198931.

It is an arithmetic number, because the mean of its divisors is an integer number (1474912260).

Almost surely, 2^11203030021 is an apocalyptic number.

It is an amenable number.

11203030021 is a deficient number, since it is larger than the sum of its proper divisors (596268059).

11203030021 is a wasteful number, since it uses less digits than its factorization.

11203030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331763.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 11203030021 its reverse (12003030211), we get a palindrome (23206060232).

The spelling of 11203030021 in words is "eleven billion, two hundred three million, thirty thousand, twenty-one".