420212420530221 has 32 divisors (see below), whose sum is σ = 612021792942720. Its totient is φ = 254339501644800.

The previous prime is 420212420530139. The next prime is 420212420530241. The reversal of 420212420530221 is 122035024212024.

It is not a de Polignac number, because 420212420530221 - 2²² = 420212416335917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420212420530241) 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 in 31 ways as a sum of consecutive naturals, for example, 84503361 + ... + 89337801.

It is an arithmetic number, because the mean of its divisors is an integer number (19125681029460).

Almost surely, 2^{420212420530221} is an apocalyptic number.

It is an amenable number.

420212420530221 is a deficient number, since it is larger than the sum of its proper divisors (191809372412499).

420212420530221 is a wasteful number, since it uses less digits than its factorization.

420212420530221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837917.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 420212420530221 its reverse (122035024212024), we get a palindrome (542247444742245).

The spelling of 420212420530221 in words is "four hundred twenty trillion, two hundred twelve billion, four hundred twenty million, five hundred thirty thousand, two hundred twenty-one".