30121212011 has 8 divisors (see below), whose sum is σ = 32905858800. Its totient is φ = 27344291040.

The previous prime is 30121211959. The next prime is 30121212047. The reversal of 30121212011 is 11021212103.

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

It is a de Polignac number, because none of the positive numbers 2^k-30121212011 is a prime.

It is a super-3 number, since 3×30121212011³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121215011) 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, 1923296 + ... + 1938893.

It is an arithmetic number, because the mean of its divisors is an integer number (4113232350).

Almost surely, 2^30121212011 is an apocalyptic number.

30121212011 is a deficient number, since it is larger than the sum of its proper divisors (2784646789).

30121212011 is a wasteful number, since it uses less digits than its factorization.

30121212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862909.

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

Adding to 30121212011 its reverse (11021212103), we get a palindrome (41142424114).

The spelling of 30121212011 in words is "thirty billion, one hundred twenty-one million, two hundred twelve thousand, eleven".