424123333112021 has 2 divisors, whose sum is σ = 424123333112022. Its totient is φ = 424123333112020.

The previous prime is 424123333111921. The next prime is 424123333112251. The reversal of 424123333112021 is 120211333321424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384678791032900 + 39444542079121 = 19613230^2 + 6280489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424123333112021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424123333117021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212061666556010 + 212061666556011.

It is an arithmetic number, because the mean of its divisors is an integer number (212061666556011).

Almost surely, 2^{424123333112021} is an apocalyptic number.

It is an amenable number.

424123333112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

424123333112021 is an equidigital number, since it uses as much as digits as its factorization.

424123333112021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 424123333112021 its reverse (120211333321424), we get a palindrome (544334666433445).

The spelling of 424123333112021 in words is "four hundred twenty-four trillion, one hundred twenty-three billion, three hundred thirty-three million, one hundred twelve thousand, twenty-one".