434001202021 has 2 divisors, whose sum is σ = 434001202022. Its totient is φ = 434001202020.

The previous prime is 434001201967. The next prime is 434001202049. The reversal of 434001202021 is 120202100434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424173453796 + 9827748225 = 651286^2 + 99135^2 .

It is a cyclic number.

It is not a de Polignac number, because 434001202021 - 2¹⁷ = 434001070949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 434001202021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434001202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217000601010 + 217000601011.

It is an arithmetic number, because the mean of its divisors is an integer number (217000601011).

Almost surely, 2^434001202021 is an apocalyptic number.

It is an amenable number.

434001202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

434001202021 is an equidigital number, since it uses as much as digits as its factorization.

434001202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 434001202021 its reverse (120202100434), we get a palindrome (554203302455).

It can be divided in two parts, 43400 and 1202021, that added together give a palindrome (1245421).

The spelling of 434001202021 in words is "four hundred thirty-four billion, one million, two hundred two thousand, twenty-one".