30012121211123 has 4 divisors (see below), whose sum is σ = 30012244375680. Its totient is φ = 30011998046568.

The previous prime is 30012121211101. The next prime is 30012121211173. The reversal of 30012121211123 is 32111212121003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30012121211123 - 2⁸ = 30012121210867 is a prime.

It is a super-2 number, since 2×30012121211123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30012121211095 and 30012121211104.

It is not an unprimeable number, because it can be changed into a prime (30012121211173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61216040 + ... + 61704357.

It is an arithmetic number, because the mean of its divisors is an integer number (7503061093920).

Almost surely, 2^{30012121211123} is an apocalyptic number.

30012121211123 is a deficient number, since it is larger than the sum of its proper divisors (123164557).

30012121211123 is a wasteful number, since it uses less digits than its factorization.

30012121211123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123164556.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 30012121211123 its reverse (32111212121003), we get a palindrome (62123333332126).

The spelling of 30012121211123 in words is "thirty trillion, twelve billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twenty-three".