30011110021 has 4 divisors (see below), whose sum is σ = 31776469452. Its totient is φ = 28245750592.

The previous prime is 30011110009. The next prime is 30011110057. The reversal of 30011110021 is 12001111003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19743341121 + 10267768900 = 140511^2 + 101330^2 .

It is a cyclic number.

It is not a de Polignac number, because 30011110021 - 2²⁵ = 29977555589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011110421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882679690 + ... + 882679723.

It is an arithmetic number, because the mean of its divisors is an integer number (7944117363).

Almost surely, 2^30011110021 is an apocalyptic number.

It is an amenable number.

30011110021 is a deficient number, since it is larger than the sum of its proper divisors (1765359431).

30011110021 is a wasteful number, since it uses less digits than its factorization.

30011110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765359430.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 30011110021 its reverse (12001111003), we get a palindrome (42012221024).

It can be divided in two parts, 3001111002 and 1, that added together give a palindrome (3001111003).

The spelling of 30011110021 in words is "thirty billion, eleven million, one hundred ten thousand, twenty-one".