22121343324212 has 48 divisors (see below), whose sum is σ = 42567207467904. Its totient is φ = 9975437760000.

The previous prime is 22121343324193. The next prime is 22121343324239. The reversal of 22121343324212 is 21242334312122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2868488 + ... + 7243680.

It is an arithmetic number, because the mean of its divisors is an integer number (886816822248).

Almost surely, 2^{22121343324212} is an apocalyptic number.

22121343324212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22121343324212 is a deficient number, since it is larger than the sum of its proper divisors (20445864143692).

22121343324212 is a wasteful number, since it uses less digits than its factorization.

22121343324212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4376120 (or 4376118 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

Adding to 22121343324212 its reverse (21242334312122), we get a palindrome (43363677636334).

The spelling of 22121343324212 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred forty-three million, three hundred twenty-four thousand, two hundred twelve".