12030203021 has 4 divisors (see below), whose sum is σ = 12149314044. Its totient is φ = 11911092000.

The previous prime is 12030202999. The next prime is 12030203027.

It is a happy number.

12030203021 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6223000996 + 5807202025 = 78886^2 + 76205^2 .

It is a cyclic number.

It is not a de Polignac number, because 12030203021 - 2⁶ = 12030202957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12030202987 and 12030203005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030203027) 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, 59555360 + ... + 59555561.

It is an arithmetic number, because the mean of its divisors is an integer number (3037328511).

Almost surely, 2^12030203021 is an apocalyptic number.

It is an amenable number.

12030203021 is a deficient number, since it is larger than the sum of its proper divisors (119111023).

12030203021 is a wasteful number, since it uses less digits than its factorization.

12030203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119111022.

The product of its (nonzero) digits is 72, while the sum is 14.

The spelling of 12030203021 in words is "twelve billion, thirty million, two hundred three thousand, twenty-one".