20101012133 has 4 divisors (see below), whose sum is σ = 21158960160. Its totient is φ = 19043064108.

The previous prime is 20101012111. The next prime is 20101012207. The reversal of 20101012133 is 33121010102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20101012133 - 2⁶ = 20101012069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101012733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528973985 + ... + 528974022.

It is an arithmetic number, because the mean of its divisors is an integer number (5289740040).

Almost surely, 2^20101012133 is an apocalyptic number.

It is an amenable number.

20101012133 is a deficient number, since it is larger than the sum of its proper divisors (1057948027).

20101012133 is a wasteful number, since it uses less digits than its factorization.

20101012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057948026.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20101012133 its reverse (33121010102), we get a palindrome (53222022235).

The spelling of 20101012133 in words is "twenty billion, one hundred one million, twelve thousand, one hundred thirty-three".