202421304432427 has 2 divisors, whose sum is σ = 202421304432428. Its totient is φ = 202421304432426.

The previous prime is 202421304432401. The next prime is 202421304432439. The reversal of 202421304432427 is 724234403124202.

202421304432427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202421304432427 - 2³⁹ = 201871548618539 is a prime.

It is a super-2 number, since 2×202421304432427² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202421304432427.

It is not a weakly prime, because it can be changed into another prime (202421304472427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101210652216213 + 101210652216214.

It is an arithmetic number, because the mean of its divisors is an integer number (101210652216214).

Almost surely, 2^{202421304432427} is an apocalyptic number.

202421304432427 is a deficient number, since it is larger than the sum of its proper divisors (1).

202421304432427 is an equidigital number, since it uses as much as digits as its factorization.

202421304432427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 516096, while the sum is 40.

Adding to 202421304432427 its reverse (724234403124202), we get a palindrome (926655707556629).

The spelling of 202421304432427 in words is "two hundred two trillion, four hundred twenty-one billion, three hundred four million, four hundred thirty-two thousand, four hundred twenty-seven".