421205525503301 has 16 divisors (see below), whose sum is σ = 525142568486400. Its totient is φ = 328210090285680.

The previous prime is 421205525503283. The next prime is 421205525503309. The reversal of 421205525503301 is 103305525502124.

It is a cyclic number.

It is not a de Polignac number, because 421205525503301 - 2⁶ = 421205525503237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421205525503309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3996071 + ... + 29298116.

It is an arithmetic number, because the mean of its divisors is an integer number (32821410530400).

Almost surely, 2^{421205525503301} is an apocalyptic number.

It is an amenable number.

421205525503301 is a deficient number, since it is larger than the sum of its proper divisors (103937042983099).

421205525503301 is a wasteful number, since it uses less digits than its factorization.

421205525503301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33458504.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 421205525503301 in words is "four hundred twenty-one trillion, two hundred five billion, five hundred twenty-five million, five hundred three thousand, three hundred one".