12021122002 has 4 divisors (see below), whose sum is σ = 18031683006. Its totient is φ = 6010561000.

The previous prime is 12021121997. The next prime is 12021122033. The reversal of 12021122002 is 20022112021.

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: 20022112021 = 1483 ⋅13501087.

It can be written as a sum of positive squares in only one way, i.e., 6409763721 + 5611358281 = 80061^2 + 74909^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005280499 + ... + 3005280502.

Almost surely, 2^12021122002 is an apocalyptic number.

12021122002 is a deficient number, since it is larger than the sum of its proper divisors (6010561004).

12021122002 is an equidigital number, since it uses as much as digits as its factorization.

12021122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6010561003.

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

Adding to 12021122002 its reverse (20022112021), we get a palindrome (32043234023).

The spelling of 12021122002 in words is "twelve billion, twenty-one million, one hundred twenty-two thousand, two".