1222021212212 has 24 divisors (see below), whose sum is σ = 2179125105696. Its totient is φ = 599416560288.

The previous prime is 1222021212211. The next prime is 1222021212221. The reversal of 1222021212212 is 2122121202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222021212211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657523 + ... + 2278469.

It is an arithmetic number, because the mean of its divisors is an integer number (90796879404).

Almost surely, 2^{1222021212212} is an apocalyptic number.

It is an amenable number.

1222021212212 is a deficient number, since it is larger than the sum of its proper divisors (957103893484).

1222021212212 is a wasteful number, since it uses less digits than its factorization.

1222021212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630287 (or 630285 counting only the distinct ones).

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

Adding to 1222021212212 its reverse (2122121202221), we get a palindrome (3344142414433).

Subtracting 1222021212212 from its reverse (2122121202221), we obtain a palindrome (900099990009).

The spelling of 1222021212212 in words is "one trillion, two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, two hundred twelve".