30010123021 has 4 divisors (see below), whose sum is σ = 31589603200. Its totient is φ = 28430642844.

The previous prime is 30010122893. The next prime is 30010123043. The reversal of 30010123021 is 12032101003.

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 not a de Polignac number, because 30010123021 - 2⁷ = 30010122893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30010122992 and 30010123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30010123051) 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, 789740061 + ... + 789740098.

It is an arithmetic number, because the mean of its divisors is an integer number (7897400800).

Almost surely, 2^30010123021 is an apocalyptic number.

It is an amenable number.

30010123021 is a deficient number, since it is larger than the sum of its proper divisors (1579480179).

30010123021 is a wasteful number, since it uses less digits than its factorization.

30010123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579480178.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30010123021 its reverse (12032101003), we get a palindrome (42042224024).

The spelling of 30010123021 in words is "thirty billion, ten million, one hundred twenty-three thousand, twenty-one".