221421255572275 has 48 divisors (see below), whose sum is σ = 301965440974848. Its totient is φ = 159720978816000.

The previous prime is 221421255572273. The next prime is 221421255572287. The reversal of 221421255572275 is 572275552124122.

221421255572275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221421255572275 - 2¹ = 221421255572273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221421255572273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124251555 + ... + 126020995.

It is an arithmetic number, because the mean of its divisors is an integer number (6290946686976).

Almost surely, 2^{221421255572275} is an apocalyptic number.

221421255572275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221421255572275 is a deficient number, since it is larger than the sum of its proper divisors (80544185402573).

221421255572275 is a wasteful number, since it uses less digits than its factorization.

221421255572275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773172 (or 1773167 counting only the distinct ones).

The product of its digits is 7840000, while the sum is 52.

The spelling of 221421255572275 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred fifty-five million, five hundred seventy-two thousand, two hundred seventy-five".