30333120021 has 24 divisors (see below), whose sum is σ = 44661992544. Its totient is φ = 19834677600.

The previous prime is 30333120011. The next prime is 30333120023. The reversal of 30333120021 is 12002133303.

It is not a de Polignac number, because 30333120021 - 2¹⁰ = 30333118997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30333119976 and 30333120003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30333120023) 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, 58671 + ... + 253196.

It is an arithmetic number, because the mean of its divisors is an integer number (1860916356).

Almost surely, 2^30333120021 is an apocalyptic number.

It is an amenable number.

30333120021 is a deficient number, since it is larger than the sum of its proper divisors (14328872523).

30333120021 is a wasteful number, since it uses less digits than its factorization.

30333120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312081 (or 312078 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 30333120021 its reverse (12002133303), we get a palindrome (42335253324).

The spelling of 30333120021 in words is "thirty billion, three hundred thirty-three million, one hundred twenty thousand, twenty-one".