30013121233 has 4 divisors (see below), whose sum is σ = 30393034240. Its totient is φ = 29633208228.

The previous prime is 30013121219. The next prime is 30013121249. The reversal of 30013121233 is 33212131003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30013121233 is a prime.

It is a super-2 number, since 2×30013121233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30013121233.

It is not an unprimeable number, because it can be changed into a prime (30013127233) 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, 189956385 + ... + 189956542.

It is an arithmetic number, because the mean of its divisors is an integer number (7598258560).

Almost surely, 2^30013121233 is an apocalyptic number.

It is an amenable number.

30013121233 is a deficient number, since it is larger than the sum of its proper divisors (379913007).

30013121233 is an equidigital number, since it uses as much as digits as its factorization.

30013121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379913006.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30013121233 its reverse (33212131003), we get a palindrome (63225252236).

The spelling of 30013121233 in words is "thirty billion, thirteen million, one hundred twenty-one thousand, two hundred thirty-three".