20121122110 has 32 divisors (see below), whose sum is σ = 36424116000. Its totient is φ = 8002772352.

The previous prime is 20121122059. The next prime is 20121122111. The reversal of 20121122110 is 1122112102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121122111) 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 15 ways as a sum of consecutive naturals, for example, 1374952 + ... + 1389508.

It is an arithmetic number, because the mean of its divisors is an integer number (1138253625).

Almost surely, 2^20121122110 is an apocalyptic number.

20121122110 is a deficient number, since it is larger than the sum of its proper divisors (16302993890).

20121122110 is a wasteful number, since it uses less digits than its factorization.

20121122110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15340.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121122110 its reverse (1122112102), we get a palindrome (21243234212).

The spelling of 20121122110 in words is "twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred ten".