421455503500201 has 16 divisors (see below), whose sum is σ = 425912738042880. Its totient is φ = 417017369517840.

The previous prime is 421455503500099. The next prime is 421455503500307. The reversal of 421455503500201 is 102005305554124.

It is a cyclic number.

It is not a de Polignac number, because 421455503500201 - 2³⁵ = 421421143761833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421455503500601) 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, 352449820 + ... + 353643586.

It is an arithmetic number, because the mean of its divisors is an integer number (26619546127680).

Almost surely, 2^{421455503500201} is an apocalyptic number.

It is an amenable number.

421455503500201 is a deficient number, since it is larger than the sum of its proper divisors (4457234542679).

421455503500201 is a wasteful number, since it uses less digits than its factorization.

421455503500201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201764.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 421455503500201 in words is "four hundred twenty-one trillion, four hundred fifty-five billion, five hundred three million, five hundred thousand, two hundred one".