12212500521222 has 24 divisors (see below), whose sum is σ = 26908899455880. Its totient is φ = 4001836328640.

The previous prime is 12212500521073. The next prime is 12212500521283. The reversal of 12212500521222 is 22212500521221.

12212500521222 is a `hidden beast` number, since 1 + 22 + 12 + 500 + 5 + 2 + 122 + 2 = 666.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 5749763779 + ... + 5749765902.

It is an arithmetic number, because the mean of its divisors is an integer number (1121204143995).

Almost surely, 2^{12212500521222} is an apocalyptic number.

12212500521222 is an abundant number, since it is smaller than the sum of its proper divisors (14696398934658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12212500521222 is a wasteful number, since it uses less digits than its factorization.

12212500521222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499529748 (or 11499529745 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Subtracting 12212500521222 from its reverse (22212500521221), we obtain a palindrome (9999999999999).

The spelling of 12212500521222 in words is "twelve trillion, two hundred twelve billion, five hundred million, five hundred twenty-one thousand, two hundred twenty-two".