221421255241299 has 4 divisors (see below), whose sum is σ = 295228340321736. Its totient is φ = 147614170160864.

The previous prime is 221421255241223. The next prime is 221421255241301. The reversal of 221421255241299 is 992142552124122.

221421255241299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221421255241299 - 2¹⁶ = 221421255175763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221421255261299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36903542540214 + ... + 36903542540219.

It is an arithmetic number, because the mean of its divisors is an integer number (73807085080434).

Almost surely, 2^{221421255241299} is an apocalyptic number.

221421255241299 is a deficient number, since it is larger than the sum of its proper divisors (73807085080437).

221421255241299 is an equidigital number, since it uses as much as digits as its factorization.

221421255241299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73807085080436.

The product of its digits is 2073600, while the sum is 51.

The spelling of 221421255241299 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, two hundred fifty-five million, two hundred forty-one thousand, two hundred ninety-nine".