20123002135 has 16 divisors (see below), whose sum is σ = 24211579392. Its totient is φ = 16055805600.

The previous prime is 20123002103. The next prime is 20123002169. The reversal of 20123002135 is 53120032102.

It is not a de Polignac number, because 20123002135 - 2⁵ = 20123002103 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 4128750 + ... + 4133620.

It is an arithmetic number, because the mean of its divisors is an integer number (1513223712).

Almost surely, 2^20123002135 is an apocalyptic number.

20123002135 is a deficient number, since it is larger than the sum of its proper divisors (4088577257).

20123002135 is a wasteful number, since it uses less digits than its factorization.

20123002135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20123002135 its reverse (53120032102), we get a palindrome (73243034237).

It can be divided in two parts, 201230021 and 35, that added together give a cube (201230056 = 586³).

The spelling of 20123002135 in words is "twenty billion, one hundred twenty-three million, two thousand, one hundred thirty-five".