2140333021 has 2 divisors, whose sum is σ = 2140333022. Its totient is φ = 2140333020.

The previous prime is 2140333009. The next prime is 2140333037. The reversal of 2140333021 is 1203330412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2116460025 + 23872996 = 46005^2 + 4886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140333021 - 2¹⁷ = 2140201949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140333021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140333001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070166510 + 1070166511.

It is an arithmetic number, because the mean of its divisors is an integer number (1070166511).

Almost surely, 2^2140333021 is an apocalyptic number.

It is an amenable number.

2140333021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140333021 is an equidigital number, since it uses as much as digits as its factorization.

2140333021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2140333021 is about 46263.7333231982. The cubic root of 2140333021 is about 1288.7255849352.

Adding to 2140333021 its reverse (1203330412), we get a palindrome (3343663433).

The spelling of 2140333021 in words is "two billion, one hundred forty million, three hundred thirty-three thousand, twenty-one".