30121330211 has 32 divisors (see below), whose sum is σ = 37830144000. Its totient is φ = 23399010432.

The previous prime is 30121330207. The next prime is 30121330237. The reversal of 30121330211 is 11203312103.

It is not a de Polignac number, because 30121330211 - 2² = 30121330207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30121330211.

It is not an unprimeable number, because it can be changed into a prime (30121300211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384590 + ... + 456236.

It is an arithmetic number, because the mean of its divisors is an integer number (1182192000).

Almost surely, 2^30121330211 is an apocalyptic number.

30121330211 is a deficient number, since it is larger than the sum of its proper divisors (7708813789).

30121330211 is a wasteful number, since it uses less digits than its factorization.

30121330211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71811.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30121330211 its reverse (11203312103), we get a palindrome (41324642314).

The spelling of 30121330211 in words is "thirty billion, one hundred twenty-one million, three hundred thirty thousand, two hundred eleven".