2101323133 has 32 divisors (see below), whose sum is σ = 2632089600. Its totient is φ = 1633334976.

The previous prime is 2101323121. The next prime is 2101323149. The reversal of 2101323133 is 3313231012.

It is not a de Polignac number, because 2101323133 - 2⁵ = 2101323101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2101323133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101323193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1717560 + ... + 1718782.

It is an arithmetic number, because the mean of its divisors is an integer number (82252800).

Almost surely, 2^2101323133 is an apocalyptic number.

It is an amenable number.

2101323133 is a deficient number, since it is larger than the sum of its proper divisors (530766467).

2101323133 is a wasteful number, since it uses less digits than its factorization.

2101323133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

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

The square root of 2101323133 is about 45840.1912408751. The cubic root of 2101323133 is about 1280.8480571815.

Adding to 2101323133 its reverse (3313231012), we get a palindrome (5414554145).

The spelling of 2101323133 in words is "two billion, one hundred one million, three hundred twenty-three thousand, one hundred thirty-three".