30121221011 has 8 divisors (see below), whose sum is σ = 34765087584. Its totient is φ = 25562563200.

The previous prime is 30121221001. The next prime is 30121221023. The reversal of 30121221011 is 11012212103.

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

It is a cyclic number.

It is not a de Polignac number, because 30121221011 - 2¹⁸ = 30120958867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121221001) 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 7 ways as a sum of consecutive naturals, for example, 21301430 + ... + 21302843.

It is an arithmetic number, because the mean of its divisors is an integer number (4345635948).

Almost surely, 2^30121221011 is an apocalyptic number.

30121221011 is a deficient number, since it is larger than the sum of its proper divisors (4643866573).

30121221011 is a wasteful number, since it uses less digits than its factorization.

30121221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42604381.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 30121221011 its reverse (11012212103), we get a palindrome (41133433114).

It can be divided in two parts, 301212 and 21011, that added together give a palindrome (322223).

The spelling of 30121221011 in words is "thirty billion, one hundred twenty-one million, two hundred twenty-one thousand, eleven".