12202013021 has 4 divisors (see below), whose sum is σ = 13311286944. Its totient is φ = 11092739100.

The previous prime is 12202013011. The next prime is 12202013023. The reversal of 12202013021 is 12031020221.

It is a happy number.

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 12202013021 - 2³⁰ = 11128271197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12202012987 and 12202013005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202013023) 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, 554636945 + ... + 554636966.

It is an arithmetic number, because the mean of its divisors is an integer number (3327821736).

Almost surely, 2^12202013021 is an apocalyptic number.

12202013021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12202013021 is a deficient number, since it is larger than the sum of its proper divisors (1109273923).

12202013021 is a wasteful number, since it uses less digits than its factorization.

12202013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109273922.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12202013021 its reverse (12031020221), we get a palindrome (24233033242).

The spelling of 12202013021 in words is "twelve billion, two hundred two million, thirteen thousand, twenty-one".