20121120110 has 32 divisors (see below), whose sum is σ = 44576021952. Its totient is φ = 6368002560.

The previous prime is 20121120079. The next prime is 20121120127. The reversal of 20121120110 is 1102112102.

It is a junction number, because it is equal to n+sod(n) for n = 20121120091 and 20121120100.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11054651 + ... + 11056470.

It is an arithmetic number, because the mean of its divisors is an integer number (1393000686).

Almost surely, 2^20121120110 is an apocalyptic number.

20121120110 is an abundant number, since it is smaller than the sum of its proper divisors (24454901842).

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

20121120110 is a wasteful number, since it uses less digits than its factorization.

20121120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22111148.

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

Adding to 20121120110 its reverse (1102112102), we get a palindrome (21223232212).

The spelling of 20121120110 in words is "twenty billion, one hundred twenty-one million, one hundred twenty thousand, one hundred ten".