20011122110 has 64 divisors (see below), whose sum is σ = 43615438848. Its totient is φ = 6453195264.

The previous prime is 20011122029. The next prime is 20011122137. The reversal of 20011122110 is 1122111002.

It is a junction number, because it is equal to n+sod(n) for n = 20011122091 and 20011122100.

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 31 ways as a sum of consecutive naturals, for example, 2217227 + ... + 2226233.

It is an arithmetic number, because the mean of its divisors is an integer number (681491232).

Almost surely, 2^20011122110 is an apocalyptic number.

20011122110 is an abundant number, since it is smaller than the sum of its proper divisors (23604316738).

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

20011122110 is a wasteful number, since it uses less digits than its factorization.

20011122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905.

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

Adding to 20011122110 its reverse (1122111002), we get a palindrome (21133233112).

The spelling of 20011122110 in words is "twenty billion, eleven million, one hundred twenty-two thousand, one hundred ten".