2212021221212 has 12 divisors (see below), whose sum is σ = 4222949604216. Its totient is φ = 1005464191440.

The previous prime is 2212021221211. The next prime is 2212021221227. The reversal of 2212021221212 is 2121221202122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212021221211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25136604743 + ... + 25136604830.

It is an arithmetic number, because the mean of its divisors is an integer number (351912467018).

Almost surely, 2^{2212021221212} is an apocalyptic number.

2212021221212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2212021221212 is a deficient number, since it is larger than the sum of its proper divisors (2010928383004).

2212021221212 is a wasteful number, since it uses less digits than its factorization.

2212021221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50273209588 (or 50273209586 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2212021221212 its reverse (2121221202122), we get a palindrome (4333242423334).

The spelling of 2212021221212 in words is "two trillion, two hundred twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred twelve".