12002022212 has 6 divisors (see below), whose sum is σ = 21003538878.
Its totient is φ = 6001011104.
The previous prime is 12002022143. The next prime is 12002022233. The reversal of 12002022212 is 21222020021.
It can be written as a sum of positive squares in only one way, i.e., 11656657156 + 345365056 = 107966^2 + 18584^2
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1500252773 + ... + 1500252780.
It is an arithmetic number, because the mean of its divisors is an integer number (3500589813).
Almost surely, 212002022212 is an apocalyptic number.
It is an amenable number.
12002022212 is a deficient number, since it is larger than the sum of its proper divisors (9001516666).
12002022212 is a wasteful number, since it uses less digits than its factorization.
12002022212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3000505557 (or 3000505555 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 14.
Adding to 12002022212 its reverse (21222020021), we get a palindrome (33224042233).
The spelling of 12002022212 in words is "twelve billion, two million, twenty-two thousand, two hundred twelve".