30000121112121 has 16 divisors (see below), whose sum is σ = 40832800081920. Its totient is φ = 19586339271440.

The previous prime is 30000121112111. The next prime is 30000121112123. The reversal of 30000121112121 is 12121112100003.

It is a cyclic number.

It is not a de Polignac number, because 30000121112121 - 2²⁷ = 29999986894393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30000121112121.

It is not an unprimeable number, because it can be changed into a prime (30000121112123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322181985 + ... + 322275086.

It is an arithmetic number, because the mean of its divisors is an integer number (2552050005120).

Almost surely, 2^{30000121112121} is an apocalyptic number.

It is an amenable number.

30000121112121 is a deficient number, since it is larger than the sum of its proper divisors (10832678969799).

30000121112121 is a wasteful number, since it uses less digits than its factorization.

30000121112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644457396.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 30000121112121 its reverse (12121112100003), we get a palindrome (42121233212124).

The spelling of 30000121112121 in words is "thirty trillion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".