20212221110120 has 96 divisors (see below), whose sum is σ = 49459911017400. Its totient is φ = 7430383973376.

The previous prime is 20212221110113. The next prime is 20212221110143. The reversal of 20212221110120 is 2101112221202.

It can be written as a sum of positive squares in 12 ways, for example, as 2679225543556 + 17532995566564 = 1636834^2 + 4187242^2 .

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 23 ways as a sum of consecutive naturals, for example, 4980287 + ... + 8076366.

Almost surely, 2^{20212221110120} is an apocalyptic number.

20212221110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212221110120 is an abundant number, since it is smaller than the sum of its proper divisors (29247689907280).

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

20212221110120 is a wasteful number, since it uses less digits than its factorization.

20212221110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056919 (or 13056902 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20212221110120 its reverse (2101112221202), we get a palindrome (22313333331322).

The spelling of 20212221110120 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty".