30011211021 has 16 divisors (see below), whose sum is σ = 43705751040. Its totient is φ = 18166495920.

The previous prime is 30011211019. The next prime is 30011211047. The reversal of 30011211021 is 12011211003.

It is not a de Polignac number, because 30011211021 - 2¹ = 30011211019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30011210988 and 30011211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011211071) 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, 525351 + ... + 579668.

It is an arithmetic number, because the mean of its divisors is an integer number (2731609440).

Almost surely, 2^30011211021 is an apocalyptic number.

It is an amenable number.

30011211021 is a deficient number, since it is larger than the sum of its proper divisors (13694540019).

30011211021 is a wasteful number, since it uses less digits than its factorization.

30011211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105856.

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

Adding to 30011211021 its reverse (12011211003), we get a palindrome (42022422024).

The spelling of 30011211021 in words is "thirty billion, eleven million, two hundred eleven thousand, twenty-one".