20012200221212 has 6 divisors (see below), whose sum is σ = 35021350387128. Its totient is φ = 10006100110604.

The previous prime is 20012200221191. The next prime is 20012200221217. The reversal of 20012200221212 is 21212200221002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012200221217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501525027648 + ... + 2501525027655.

It is an arithmetic number, because the mean of its divisors is an integer number (5836891731188).

Almost surely, 2^{20012200221212} is an apocalyptic number.

It is an amenable number.

20012200221212 is a deficient number, since it is larger than the sum of its proper divisors (15009150165916).

20012200221212 is a wasteful number, since it uses less digits than its factorization.

20012200221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003050055307 (or 5003050055305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20012200221212 its reverse (21212200221002), we get a palindrome (41224400442214).

The spelling of 20012200221212 in words is "twenty trillion, twelve billion, two hundred million, two hundred twenty-one thousand, two hundred twelve".