12002121022 has 4 divisors (see below), whose sum is σ = 18003181536. Its totient is φ = 6001060510.

The previous prime is 12002121011. The next prime is 12002121037. The reversal of 12002121022 is 22012120021.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12002120993 and 12002121011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3000530254 + ... + 3000530257.

It is an arithmetic number, because the mean of its divisors is an integer number (4500795384).

Almost surely, 2^12002121022 is an apocalyptic number.

12002121022 is a deficient number, since it is larger than the sum of its proper divisors (6001060514).

12002121022 is an equidigital number, since it uses as much as digits as its factorization.

12002121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001060513.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12002121022 its reverse (22012120021), we get a palindrome (34014241043).

The spelling of 12002121022 in words is "twelve billion, two million, one hundred twenty-one thousand, twenty-two".