22121332112212 has 12 divisors (see below), whose sum is σ = 38712539015136. Its totient is φ = 11060606679320.

The previous prime is 22121332112207. The next prime is 22121332112267. The reversal of 22121332112212 is 21221123312122.

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, 14000614 + ... + 15500317.

It is an arithmetic number, because the mean of its divisors is an integer number (3226044917928).

Almost surely, 2^{22121332112212} is an apocalyptic number.

It is an amenable number.

22121332112212 is a deficient number, since it is larger than the sum of its proper divisors (16591206902924).

22121332112212 is a wasteful number, since it uses less digits than its factorization.

22121332112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29688398 (or 29688396 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

Adding to 22121332112212 its reverse (21221123312122), we get a palindrome (43342455424334).

The spelling of 22121332112212 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred thirty-two million, one hundred twelve thousand, two hundred twelve".