20121020221222 has 8 divisors (see below), whose sum is σ = 30333196314000. Its totient is φ = 10009954783224.

The previous prime is 20121020221189. The next prime is 20121020221249. The reversal of 20121020221222 is 22212202012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20121020221222.

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 3 ways as a sum of consecutive naturals, for example, 25277663197 + ... + 25277663992.

It is an arithmetic number, because the mean of its divisors is an integer number (3791649539250).

Almost surely, 2^{20121020221222} is an apocalyptic number.

20121020221222 is a deficient number, since it is larger than the sum of its proper divisors (10212176092778).

20121020221222 is a wasteful number, since it uses less digits than its factorization.

20121020221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50555327390.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20121020221222 its reverse (22212202012102), we get a palindrome (42333222233324).

The spelling of 20121020221222 in words is "twenty trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, two hundred twenty-two".