2100012133 has 4 divisors (see below), whose sum is σ = 2125313568. Its totient is φ = 2074710700.

The previous prime is 2100012127. The next prime is 2100012157. The reversal of 2100012133 is 3312100012.

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 a cyclic number.

It is not a de Polignac number, because 2100012133 - 2⁹ = 2100011621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100015133) 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, 12650593 + ... + 12650758.

It is an arithmetic number, because the mean of its divisors is an integer number (531328392).

Almost surely, 2^2100012133 is an apocalyptic number.

It is an amenable number.

2100012133 is a deficient number, since it is larger than the sum of its proper divisors (25301435).

2100012133 is an equidigital number, since it uses as much as digits as its factorization.

2100012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25301434.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2100012133 is about 45825.8893312503. The cubic root of 2100012133 is about 1280.5816312156.

Adding to 2100012133 its reverse (3312100012), we get a palindrome (5412112145).

It can be divided in two parts, 21000 and 12133, that added together give a palindrome (33133).

The spelling of 2100012133 in words is "two billion, one hundred million, twelve thousand, one hundred thirty-three".