3733340021 has 2 divisors, whose sum is σ = 3733340022. Its totient is φ = 3733340020.

The previous prime is 3733339999. The next prime is 3733340033. The reversal of 3733340021 is 1200433373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2583180625 + 1150159396 = 50825^2 + 33914^2 .

It is an emirp because it is prime and its reverse (1200433373) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3733340021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3733340041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1866670010 + 1866670011.

It is an arithmetic number, because the mean of its divisors is an integer number (1866670011).

Almost surely, 2^3733340021 is an apocalyptic number.

It is an amenable number.

3733340021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3733340021 is an equidigital number, since it uses as much as digits as its factorization.

3733340021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 26.

The square root of 3733340021 is about 61101.0639923725. The cubic root of 3733340021 is about 1551.3121072747.

Adding to 3733340021 its reverse (1200433373), we get a palindrome (4933773394).

The spelling of 3733340021 in words is "three billion, seven hundred thirty-three million, three hundred forty thousand, twenty-one".