2221120221212 has 12 divisors (see below), whose sum is σ = 3981764299296. Its totient is φ = 1083473278560.

The previous prime is 2221120221191. The next prime is 2221120221241. The reversal of 2221120221212 is 2121220211222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6771707828 + ... + 6771708155.

It is an arithmetic number, because the mean of its divisors is an integer number (331813691608).

Almost surely, 2^{2221120221212} is an apocalyptic number.

It is an amenable number.

2221120221212 is a deficient number, since it is larger than the sum of its proper divisors (1760644078084).

2221120221212 is a wasteful number, since it uses less digits than its factorization.

2221120221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13543416028 (or 13543416026 counting only the distinct ones).

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

Adding to 2221120221212 its reverse (2121220211222), we get a palindrome (4342340432434).

The spelling of 2221120221212 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twelve".