202121312027 has 2 divisors, whose sum is σ = 202121312028. Its totient is φ = 202121312026.

The previous prime is 202121312011. The next prime is 202121312051. The reversal of 202121312027 is 720213121202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202121312027 - 2⁴ = 202121312011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202121311993 and 202121312011.

It is not a weakly prime, because it can be changed into another prime (202121312087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060656013 + 101060656014.

It is an arithmetic number, because the mean of its divisors is an integer number (101060656014).

Almost surely, 2^202121312027 is an apocalyptic number.

202121312027 is a deficient number, since it is larger than the sum of its proper divisors (1).

202121312027 is an equidigital number, since it uses as much as digits as its factorization.

202121312027 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 23.

Adding to 202121312027 its reverse (720213121202), we get a palindrome (922334433229).

The spelling of 202121312027 in words is "two hundred two billion, one hundred twenty-one million, three hundred twelve thousand, twenty-seven".