20121222202112 has 36 divisors (see below), whose sum is σ = 42277732515480. Its totient is φ = 9531105251328.

The previous prime is 20121222202097. The next prime is 20121222202117. The reversal of 20121222202112 is 21120222212102.

It is not an unprimeable number, because it can be changed into a prime (20121222202117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068377353 + ... + 2068387080.

Almost surely, 2^{20121222202112} is an apocalyptic number.

It is an amenable number.

20121222202112 is an abundant number, since it is smaller than the sum of its proper divisors (22156510313368).

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

20121222202112 is an equidigital number, since it uses as much as digits as its factorization.

20121222202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136764468 (or 4136764454 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20121222202112 its reverse (21120222212102), we get a palindrome (41241444414214).

The spelling of 20121222202112 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, one hundred twelve".