12030213021 has 8 divisors (see below), whose sum is σ = 16041632544. Its totient is φ = 8019467760.

The previous prime is 12030213011. The next prime is 12030213023. The reversal of 12030213021 is 12031203021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12030213021 - 2²³ = 12021824413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030213023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125350 + ... + 199431.

It is an arithmetic number, because the mean of its divisors is an integer number (2005204068).

Almost surely, 2^12030213021 is an apocalyptic number.

It is an amenable number.

12030213021 is a deficient number, since it is larger than the sum of its proper divisors (4011419523).

12030213021 is a wasteful number, since it uses less digits than its factorization.

12030213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337131.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12030213021 its reverse (12031203021), we get a palindrome (24061416042).

The spelling of 12030213021 in words is "twelve billion, thirty million, two hundred thirteen thousand, twenty-one".