2021131333 has 6 divisors (see below), whose sum is σ = 2188562514. Its totient is φ = 1865659536.

The previous prime is 2021131303. The next prime is 2021131337. The reversal of 2021131333 is 3331311202.

It can be written as a sum of positive squares in 3 ways, for example, as 231587524 + 1789543809 = 15218^2 + 42303^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2021131333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021131333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021131337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5979510 + ... + 5979847.

It is an arithmetic number, because the mean of its divisors is an integer number (364760419).

Almost surely, 2^2021131333 is an apocalyptic number.

It is an amenable number.

2021131333 is a deficient number, since it is larger than the sum of its proper divisors (167431181).

2021131333 is a wasteful number, since it uses less digits than its factorization.

2021131333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11959383 (or 11959370 counting only the distinct ones).

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

The square root of 2021131333 is about 44956.9942611825. The cubic root of 2021131333 is about 1264.3428151779.

Adding to 2021131333 its reverse (3331311202), we get a palindrome (5352442535).

The spelling of 2021131333 in words is "two billion, twenty-one million, one hundred thirty-one thousand, three hundred thirty-three".