12021120002 has 16 divisors (see below), whose sum is σ = 19166670360. Its totient is φ = 5634981888.

The previous prime is 12021119969. The next prime is 12021120061. The reversal of 12021120002 is 20002112021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11872499521 + 148620481 = 108961^2 + 12191^2 .

It is a super-2 number, since 2×12021120002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679127 + ... + 696602.

Almost surely, 2^12021120002 is an apocalyptic number.

12021120002 is a deficient number, since it is larger than the sum of its proper divisors (7145550358).

12021120002 is a wasteful number, since it uses less digits than its factorization.

12021120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376005.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12021120002 its reverse (20002112021), we get a palindrome (32023232023).

The spelling of 12021120002 in words is "twelve billion, twenty-one million, one hundred twenty thousand, two".