20021112110 has 8 divisors (see below), whose sum is σ = 36038001816. Its totient is φ = 8008444840.

The previous prime is 20021112103. The next prime is 20021112173. The reversal of 20021112110 is 1121112002.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20021112091 and 20021112100.

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, 1001055596 + ... + 1001055615.

It is an arithmetic number, because the mean of its divisors is an integer number (4504750227).

Almost surely, 2^20021112110 is an apocalyptic number.

20021112110 is a deficient number, since it is larger than the sum of its proper divisors (16016889706).

20021112110 is a wasteful number, since it uses less digits than its factorization.

20021112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002111218.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20021112110 its reverse (1121112002), we get a palindrome (21142224112).

The spelling of 20021112110 in words is "twenty billion, twenty-one million, one hundred twelve thousand, one hundred ten".