221534452246217 has 32 divisors (see below), whose sum is σ = 254027725378560. Its totient is φ = 191342153800000.

The previous prime is 221534452246207. The next prime is 221534452246243. The reversal of 221534452246217 is 712642254435122.

It is a cyclic number.

It is not a de Polignac number, because 221534452246217 - 2¹⁴ = 221534452229833 is a prime.

It is a super-2 number, since 2×221534452246217² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221534452246207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10021709 + ... + 23313162.

It is an arithmetic number, because the mean of its divisors is an integer number (7938366418080).

Almost surely, 2^{221534452246217} is an apocalyptic number.

It is an amenable number.

221534452246217 is a deficient number, since it is larger than the sum of its proper divisors (32493273132343).

221534452246217 is a wasteful number, since it uses less digits than its factorization.

221534452246217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33335245.

The product of its digits is 6451200, while the sum is 50.

The spelling of 221534452246217 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-two million, two hundred forty-six thousand, two hundred seventeen".