12002302121 has 4 divisors (see below), whose sum is σ = 12004066500. Its totient is φ = 12000537744.

The previous prime is 12002302099. The next prime is 12002302153. The reversal of 12002302121 is 12120320021.

It is a happy number.

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 6502003225 + 5500298896 = 80635^2 + 74164^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002302121 - 2⁶ = 12002302057 is a prime.

It is a super-2 number, since 2×12002302121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002302096 and 12002302105.

It is not an unprimeable number, because it can be changed into a prime (12002302171) 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, 871946 + ... + 885603.

It is an arithmetic number, because the mean of its divisors is an integer number (3001016625).

Almost surely, 2^12002302121 is an apocalyptic number.

It is an amenable number.

12002302121 is a deficient number, since it is larger than the sum of its proper divisors (1764379).

12002302121 is an equidigital number, since it uses as much as digits as its factorization.

12002302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764378.

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

Adding to 12002302121 its reverse (12120320021), we get a palindrome (24122622142).

The spelling of 12002302121 in words is "twelve billion, two million, three hundred two thousand, one hundred twenty-one".