1013133021 has 4 divisors (see below), whose sum is σ = 1350844032. Its totient is φ = 675422012.

The previous prime is 1013132993. The next prime is 1013133047. The reversal of 1013133021 is 1203313101.

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 1013133021 - 2¹³ = 1013124829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013133061) 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, 168855501 + ... + 168855506.

It is an arithmetic number, because the mean of its divisors is an integer number (337711008).

Almost surely, 2^1013133021 is an apocalyptic number.

It is an amenable number.

1013133021 is a deficient number, since it is larger than the sum of its proper divisors (337711011).

1013133021 is an equidigital number, since it uses as much as digits as its factorization.

1013133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337711010.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1013133021 is about 31829.7505645269. The cubic root of 1013133021 is about 1004.3586482505.

Adding to 1013133021 its reverse (1203313101), we get a palindrome (2216446122).

The spelling of 1013133021 in words is "one billion, thirteen million, one hundred thirty-three thousand, twenty-one".