20101323133 has 16 divisors (see below), whose sum is σ = 21484298880. Its totient is φ = 18761649984.

The previous prime is 20101323119. The next prime is 20101323157. The reversal of 20101323133 is 33132310102.

It is a cyclic number.

It is not a de Polignac number, because 20101323133 - 2⁹ = 20101322621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20101323133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101321133) by changing a digit.

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, 1047735 + ... + 1066747.

It is an arithmetic number, because the mean of its divisors is an integer number (1342768680).

Almost surely, 2^20101323133 is an apocalyptic number.

20101323133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20101323133 is a deficient number, since it is larger than the sum of its proper divisors (1382975747).

20101323133 is a wasteful number, since it uses less digits than its factorization.

20101323133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20148.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20101323133 its reverse (33132310102), we get a palindrome (53233633235).

The spelling of 20101323133 in words is "twenty billion, one hundred one million, three hundred twenty-three thousand, one hundred thirty-three".