201310133021 has 4 divisors (see below), whose sum is σ = 211905403200. Its totient is φ = 190714862844.

The previous prime is 201310133009. The next prime is 201310133051. The reversal of 201310133021 is 120331013102.

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 a de Polignac number, because none of the positive numbers 2^k-201310133021 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 (201310133051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5297635061 + ... + 5297635098.

It is an arithmetic number, because the mean of its divisors is an integer number (52976350800).

Almost surely, 2^201310133021 is an apocalyptic number.

It is an amenable number.

201310133021 is a deficient number, since it is larger than the sum of its proper divisors (10595270179).

201310133021 is a wasteful number, since it uses less digits than its factorization.

201310133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10595270178.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 201310133021 its reverse (120331013102), we get a palindrome (321641146123).

The spelling of 201310133021 in words is "two hundred one billion, three hundred ten million, one hundred thirty-three thousand, twenty-one".