20021110212122 has 8 divisors (see below), whose sum is σ = 30032191465716. Its totient is φ = 10010379723552.

The previous prime is 20021110212119. The next prime is 20021110212137. The reversal of 20021110212122 is 22121201112002.

It can be written as a sum of positive squares in 2 ways, for example, as 14350239525241 + 5670870686881 = 3788171^2 + 2381359^2 .

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

It is a super-3 number, since 3×20021110212122³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20021110212122.

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, 87548513 + ... + 87776900.

Almost surely, 2^{20021110212122} is an apocalyptic number.

20021110212122 is a deficient number, since it is larger than the sum of its proper divisors (10011081253594).

20021110212122 is a wasteful number, since it uses less digits than its factorization.

20021110212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175382512.

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

Adding to 20021110212122 its reverse (22121201112002), we get a palindrome (42142311324124).

The spelling of 20021110212122 in words is "twenty trillion, twenty-one billion, one hundred ten million, two hundred twelve thousand, one hundred twenty-two".