30121212221131 has 32 divisors (see below), whose sum is σ = 30707112960000. Its totient is φ = 29542600002048.

The previous prime is 30121212221077. The next prime is 30121212221161. The reversal of 30121212221131 is 13112221212103.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30121212221131 - 2⁷ = 30121212221003 is a prime.

It is a super-2 number, since 2×30121212221131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30121212221161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8698009306 + ... + 8698012768.

It is an arithmetic number, because the mean of its divisors is an integer number (959597280000).

Almost surely, 2^{30121212221131} is an apocalyptic number.

30121212221131 is a deficient number, since it is larger than the sum of its proper divisors (585900738869).

30121212221131 is a wasteful number, since it uses less digits than its factorization.

30121212221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 30121212221131 its reverse (13112221212103), we get a palindrome (43233433433234).

The spelling of 30121212221131 in words is "thirty trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-one thousand, one hundred thirty-one".