20021112110001 has 8 divisors (see below), whose sum is σ = 27345909223584. Its totient is φ = 13021861534880.

The previous prime is 20021112109979. The next prime is 20021112110011. The reversal of 20021112110001 is 10001121112002.

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

It is a cyclic number.

It is not a de Polignac number, because 20021112110001 - 2¹⁴ = 20021112093617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021112110011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81386634471 + ... + 81386634716.

It is an arithmetic number, because the mean of its divisors is an integer number (3418238652948).

Almost surely, 2^{20021112110001} is an apocalyptic number.

It is an amenable number.

20021112110001 is a deficient number, since it is larger than the sum of its proper divisors (7324797113583).

20021112110001 is a wasteful number, since it uses less digits than its factorization.

20021112110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162773269231.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20021112110001 its reverse (10001121112002), we get a palindrome (30022233222003).

The spelling of 20021112110001 in words is "twenty trillion, twenty-one billion, one hundred twelve million, one hundred ten thousand, one".