3321340021 has 2 divisors, whose sum is σ = 3321340022. Its totient is φ = 3321340020.

The previous prime is 3321339977. The next prime is 3321340051. The reversal of 3321340021 is 1200431233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2345464900 + 975875121 = 48430^2 + 31239^2 .

It is an emirp because it is prime and its reverse (1200431233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3321340021 - 2⁷ = 3321339893 is a prime.

It is a super-2 number, since 2×3321340021² = 22062599070192560882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3321340051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660670010 + 1660670011.

It is an arithmetic number, because the mean of its divisors is an integer number (1660670011).

Almost surely, 2^3321340021 is an apocalyptic number.

It is an amenable number.

3321340021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3321340021 is an equidigital number, since it uses as much as digits as its factorization.

3321340021 is an evil number, because the sum of its binary digits is even.

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

The square root of 3321340021 is about 57631.0681924255. The cubic root of 3321340021 is about 1492.0078663092.

Adding to 3321340021 its reverse (1200431233), we get a palindrome (4521771254).

The spelling of 3321340021 in words is "three billion, three hundred twenty-one million, three hundred forty thousand, twenty-one".