22121111102212 has 24 divisors (see below), whose sum is σ = 38814531315840. Its totient is φ = 11031282570240.

The previous prime is 22121111102179. The next prime is 22121111102263. The reversal of 22121111102212 is 21220111112122.

It is a happy number.

It is a super-2 number, since 2×22121111102212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121111102212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337688 + ... + 7050319.

It is an arithmetic number, because the mean of its divisors is an integer number (1617272138160).

Almost surely, 2^{22121111102212} is an apocalyptic number.

It is an amenable number.

22121111102212 is a deficient number, since it is larger than the sum of its proper divisors (16693420213628).

22121111102212 is a wasteful number, since it uses less digits than its factorization.

22121111102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389571 (or 9389569 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22121111102212 its reverse (21220111112122), we get a palindrome (43341222214334).

The spelling of 22121111102212 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred two thousand, two hundred twelve".