20212222121012 has 48 divisors (see below), whose sum is σ = 35864276725200. Its totient is φ = 9966257832960.

The previous prime is 20212222120973. The next prime is 20212222121027. The reversal of 20212222121012 is 21012122221202.

It can be written as a sum of positive squares in 8 ways, for example, as 3090866383396 + 17121355737616 = 1758086^2 + 4137796^2 .

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 90093314 + ... + 90317382.

It is an arithmetic number, because the mean of its divisors is an integer number (747172431775).

Almost surely, 2^{20212222121012} is an apocalyptic number.

It is an amenable number.

20212222121012 is a deficient number, since it is larger than the sum of its proper divisors (15652054604188).

20212222121012 is a wasteful number, since it uses less digits than its factorization.

20212222121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225156 (or 225154 counting only the distinct ones).

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

Adding to 20212222121012 its reverse (21012122221202), we get a palindrome (41224344342214).

The spelling of 20212222121012 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, twelve".