30121331211 has 12 divisors (see below), whose sum is σ = 43521812880. Its totient is φ = 20074784400.

The previous prime is 30121331179. The next prime is 30121331239. The reversal of 30121331211 is 11213312103.

30121331211 is a `hidden beast` number, since 3 + 0 + 121 + 331 + 211 = 666.

It is not a de Polignac number, because 30121331211 - 2⁵ = 30121331179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30121331281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477231 + ... + 536648.

It is an arithmetic number, because the mean of its divisors is an integer number (3626817740).

Almost surely, 2^30121331211 is an apocalyptic number.

30121331211 is a deficient number, since it is larger than the sum of its proper divisors (13400481669).

30121331211 is a wasteful number, since it uses less digits than its factorization.

30121331211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017186 (or 1017183 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 30121331211 its reverse (11213312103), we get a palindrome (41334643314).

The spelling of 30121331211 in words is "thirty billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred eleven".