12022121002 has 4 divisors (see below), whose sum is σ = 18033181506. Its totient is φ = 6011060500.

The previous prime is 12022120991. The next prime is 12022121003. The reversal of 12022121002 is 20012122021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20012122021 = 45949 ⋅435529.

It can be written as a sum of positive squares in only one way, i.e., 12018956161 + 3164841 = 109631^2 + 1779^2 .

It is not an unprimeable number, because it can be changed into a prime (12022121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005530249 + ... + 3005530252.

Almost surely, 2^12022121002 is an apocalyptic number.

12022121002 is a deficient number, since it is larger than the sum of its proper divisors (6011060504).

12022121002 is an equidigital number, since it uses as much as digits as its factorization.

12022121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011060503.

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

Adding to 12022121002 its reverse (20012122021), we get a palindrome (32034243023).

The spelling of 12022121002 in words is "twelve billion, twenty-two million, one hundred twenty-one thousand, two".