22121210012012 has 12 divisors (see below), whose sum is σ = 38712392552736. Its totient is φ = 11060526425520.

The previous prime is 22121210011961. The next prime is 22121210012149. The reversal of 22121210012012 is 21021001212122.

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, 19009439 + ... + 20139542.

It is an arithmetic number, because the mean of its divisors is an integer number (3226032712728).

Almost surely, 2^{22121210012012} is an apocalyptic number.

It is an amenable number.

22121210012012 is a deficient number, since it is larger than the sum of its proper divisors (16591182540724).

22121210012012 is a wasteful number, since it uses less digits than its factorization.

22121210012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39290248 (or 39290246 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22121210012012 its reverse (21021001212122), we get a palindrome (43142211224134).

The spelling of 22121210012012 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred ten million, twelve thousand, twelve".