12020214321 has 32 divisors (see below), whose sum is σ = 19391376000. Its totient is φ = 7329921984.

The previous prime is 12020214307. The next prime is 12020214329. The reversal of 12020214321 is 12341202021.

It is a happy number.

It is not a de Polignac number, because 12020214321 - 2¹³ = 12020206129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020214294 and 12020214303.

It is not an unprimeable number, because it can be changed into a prime (12020214329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389110 + ... + 418863.

It is an arithmetic number, because the mean of its divisors is an integer number (605980500).

Almost surely, 2^12020214321 is an apocalyptic number.

It is an amenable number.

12020214321 is a deficient number, since it is larger than the sum of its proper divisors (7371161679).

12020214321 is a wasteful number, since it uses less digits than its factorization.

12020214321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808030 (or 808024 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12020214321 its reverse (12341202021), we get a palindrome (24361416342).

The spelling of 12020214321 in words is "twelve billion, twenty million, two hundred fourteen thousand, three hundred twenty-one".