30012120210321 has 24 divisors (see below), whose sum is σ = 44070289309800. Its totient is φ = 19676157465600.

The previous prime is 30012120210271. The next prime is 30012120210337. The reversal of 30012120210321 is 12301202121003.

30012120210321 is a `hidden beast` number, since 3 + 0 + 0 + 12 + 120 + 210 + 321 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 66545425296 + 29945574785025 = 257964^2 + 5472255^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30012120210321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30012120210294 and 30012120210303.

It is not an unprimeable number, because it can be changed into a prime (30012120280321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2687296 + ... + 8200353.

It is an arithmetic number, because the mean of its divisors is an integer number (1836262054575).

Almost surely, 2^{30012120210321} is an apocalyptic number.

It is an amenable number.

30012120210321 is a deficient number, since it is larger than the sum of its proper divisors (14058169099479).

30012120210321 is a wasteful number, since it uses less digits than its factorization.

30012120210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10892737 (or 10892734 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 30012120210321 its reverse (12301202121003), we get a palindrome (42313322331324).

The spelling of 30012120210321 in words is "thirty trillion, twelve billion, one hundred twenty million, two hundred ten thousand, three hundred twenty-one".