420522312311521 has 8 divisors (see below), whose sum is σ = 480602501636544. Its totient is φ = 360443516306640.

The previous prime is 420522312311449. The next prime is 420522312311539. The reversal of 420522312311521 is 125113213225024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420522312311521 - 2²⁷ = 420522178093793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420522312311561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347683210 + ... + 348890611.

It is an arithmetic number, because the mean of its divisors is an integer number (60075312704568).

Almost surely, 2^{420522312311521} is an apocalyptic number.

It is an amenable number.

420522312311521 is a deficient number, since it is larger than the sum of its proper divisors (60080189325023).

420522312311521 is an equidigital number, since it uses as much as digits as its factorization.

420522312311521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696660071.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 420522312311521 its reverse (125113213225024), we get a palindrome (545635525536545).

The spelling of 420522312311521 in words is "four hundred twenty trillion, five hundred twenty-two billion, three hundred twelve million, three hundred eleven thousand, five hundred twenty-one".