1021112133 has 4 divisors (see below), whose sum is σ = 1361482848. Its totient is φ = 680741420.

The previous prime is 1021112111. The next prime is 1021112153. The reversal of 1021112133 is 3312111201.

It is a happy number.

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 1021112133 - 2²⁴ = 1004334917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021112153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170185353 + ... + 170185358.

It is an arithmetic number, because the mean of its divisors is an integer number (340370712).

Almost surely, 2^1021112133 is an apocalyptic number.

It is an amenable number.

1021112133 is a deficient number, since it is larger than the sum of its proper divisors (340370715).

1021112133 is an equidigital number, since it uses as much as digits as its factorization.

1021112133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340370714.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1021112133 is about 31954.8452194655. The cubic root of 1021112133 is about 1006.9884258043.

Adding to 1021112133 its reverse (3312111201), we get a palindrome (4333223334).

The spelling of 1021112133 in words is "one billion, twenty-one million, one hundred twelve thousand, one hundred thirty-three".