423001021213 has 2 divisors, whose sum is σ = 423001021214. Its totient is φ = 423001021212.

The previous prime is 423001021067. The next prime is 423001021237. The reversal of 423001021213 is 312120100324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293956983684 + 129044037529 = 542178^2 + 359227^2 .

It is a cyclic number.

It is not a de Polignac number, because 423001021213 - 2¹³ = 423001013021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423001021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211500510606 + 211500510607.

It is an arithmetic number, because the mean of its divisors is an integer number (211500510607).

Almost surely, 2^423001021213 is an apocalyptic number.

It is an amenable number.

423001021213 is a deficient number, since it is larger than the sum of its proper divisors (1).

423001021213 is an equidigital number, since it uses as much as digits as its factorization.

423001021213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 423001021213 its reverse (312120100324), we get a palindrome (735121121537).

The spelling of 423001021213 in words is "four hundred twenty-three billion, one million, twenty-one thousand, two hundred thirteen".