30121101111 has 16 divisors (see below), whose sum is σ = 41551889760. Its totient is φ = 19385708160.

The previous prime is 30121101107. The next prime is 30121101133. The reversal of 30121101111 is 11110112103.

It is not a de Polignac number, because 30121101111 - 2² = 30121101107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121101161) 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 15 ways as a sum of consecutive naturals, for example, 800541 + ... + 837321.

It is an arithmetic number, because the mean of its divisors is an integer number (2596993110).

Almost surely, 2^30121101111 is an apocalyptic number.

30121101111 is a deficient number, since it is larger than the sum of its proper divisors (11430788649).

30121101111 is a wasteful number, since it uses less digits than its factorization.

30121101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46226.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 30121101111 its reverse (11110112103), we get a palindrome (41231213214).

The spelling of 30121101111 in words is "thirty billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".