221775881305139 has 8 divisors (see below), whose sum is σ = 258240379309920. Its totient is φ = 186506940612096.

The previous prime is 221775881305117. The next prime is 221775881305157. The reversal of 221775881305139 is 931503188577122.

It is a happy number.

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 221775881305139 - 2³² = 221771586337843 is a prime.

It is a super-2 number, since 2×221775881305139² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221775881307139) 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, 298889327534 + ... + 298889328275.

It is an arithmetic number, because the mean of its divisors is an integer number (32280047413740).

Almost surely, 2^{221775881305139} is an apocalyptic number.

221775881305139 is a deficient number, since it is larger than the sum of its proper divisors (36464498004781).

221775881305139 is an equidigital number, since it uses as much as digits as its factorization.

221775881305139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597778655869.

The product of its (nonzero) digits is 25401600, while the sum is 62.

The spelling of 221775881305139 in words is "two hundred twenty-one trillion, seven hundred seventy-five billion, eight hundred eighty-one million, three hundred five thousand, one hundred thirty-nine".