201021340027 has 2 divisors, whose sum is σ = 201021340028. Its totient is φ = 201021340026.

The previous prime is 201021339979. The next prime is 201021340043. The reversal of 201021340027 is 720043120102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201021340027 is a prime.

It is not a weakly prime, because it can be changed into another prime (201021340627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510670013 + 100510670014.

It is an arithmetic number, because the mean of its divisors is an integer number (100510670014).

Almost surely, 2^201021340027 is an apocalyptic number.

201021340027 is a deficient number, since it is larger than the sum of its proper divisors (1).

201021340027 is an equidigital number, since it uses as much as digits as its factorization.

201021340027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 201021340027 its reverse (720043120102), we get a palindrome (921064460129).

The spelling of 201021340027 in words is "two hundred one billion, twenty-one million, three hundred forty thousand, twenty-seven".