12121021022 has 32 divisors (see below), whose sum is σ = 20847953664. Its totient is φ = 5231512000.

The previous prime is 12121021021. The next prime is 12121021039. The reversal of 12121021022 is 22012012121.

12121021022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12121020988 and 12121021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121021021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18104 + ... + 156747.

It is an arithmetic number, because the mean of its divisors is an integer number (651498552).

Almost surely, 2^12121021022 is an apocalyptic number.

12121021022 is a deficient number, since it is larger than the sum of its proper divisors (8726932642).

12121021022 is a wasteful number, since it uses less digits than its factorization.

12121021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175024.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121021022 its reverse (22012012121), we get a palindrome (34133033143).

The spelling of 12121021022 in words is "twelve billion, one hundred twenty-one million, twenty-one thousand, twenty-two".