20121110107 has 32 divisors (see below), whose sum is σ = 24213703680. Its totient is φ = 16356090240.

The previous prime is 20121110089. The next prime is 20121110117. The reversal of 20121110107 is 70101112102.

It is not a de Polignac number, because 20121110107 - 2⁷ = 20121109979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121110117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4076413 + ... + 4081345.

It is an arithmetic number, because the mean of its divisors is an integer number (756678240).

Almost surely, 2^20121110107 is an apocalyptic number.

20121110107 is a deficient number, since it is larger than the sum of its proper divisors (4092593573).

20121110107 is a wasteful number, since it uses less digits than its factorization.

20121110107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5323.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 20121110107 its reverse (70101112102), we get a palindrome (90222222209).

The spelling of 20121110107 in words is "twenty billion, one hundred twenty-one million, one hundred ten thousand, one hundred seven".