20123120010 has 128 divisors (see below), whose sum is σ = 57180556800. Its totient is φ = 4439834112.

The previous prime is 20123120009. The next prime is 20123120041. The reversal of 20123120010 is 1002132102.

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 63 ways as a sum of consecutive naturals, for example, 5119726 + ... + 5123654.

It is an arithmetic number, because the mean of its divisors is an integer number (446723100).

Almost surely, 2^20123120010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20123120010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28590278400).

20123120010 is an abundant number, since it is smaller than the sum of its proper divisors (37057436790).

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

20123120010 is an equidigital number, since it uses as much as digits as its factorization.

20123120010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033 (or 3975 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20123120010 its reverse (1002132102), we get a palindrome (21125252112).

The spelling of 20123120010 in words is "twenty billion, one hundred twenty-three million, one hundred twenty thousand, ten".