2021022133 has 4 divisors (see below), whose sum is σ = 2176485388. Its totient is φ = 1865558880.

The previous prime is 2021022119. The next prime is 2021022149. The reversal of 2021022133 is 3312201202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 264322564 + 1756699569 = 16258^2 + 41913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021022133 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 (2021022163) 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, 77731608 + ... + 77731633.

It is an arithmetic number, because the mean of its divisors is an integer number (544121347).

Almost surely, 2^2021022133 is an apocalyptic number.

It is an amenable number.

2021022133 is a deficient number, since it is larger than the sum of its proper divisors (155463255).

2021022133 is a wasteful number, since it uses less digits than its factorization.

2021022133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155463254.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2021022133 is about 44955.7797507729. The cubic root of 2021022133 is about 1264.3200443136.

Adding to 2021022133 its reverse (3312201202), we get a palindrome (5333223335).

The spelling of 2021022133 in words is "two billion, twenty-one million, twenty-two thousand, one hundred thirty-three".