421403213051 has 2 divisors, whose sum is σ = 421403213052. Its totient is φ = 421403213050.

The previous prime is 421403213009. The next prime is 421403213053. The reversal of 421403213051 is 150312304124.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421403213051 is a prime.

Together with 421403213053, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421403213051.

It is not a weakly prime, because it can be changed into another prime (421403213053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210701606525 + 210701606526.

It is an arithmetic number, because the mean of its divisors is an integer number (210701606526).

Almost surely, 2^421403213051 is an apocalyptic number.

421403213051 is a deficient number, since it is larger than the sum of its proper divisors (1).

421403213051 is an equidigital number, since it uses as much as digits as its factorization.

421403213051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 421403213051 its reverse (150312304124), we get a palindrome (571715517175).

The spelling of 421403213051 in words is "four hundred twenty-one billion, four hundred three million, two hundred thirteen thousand, fifty-one".