221671520070067 has 16 divisors (see below), whose sum is σ = 223777437811200. Its totient is φ = 219577271601600.

The previous prime is 221671520070061. The next prime is 221671520070097. The reversal of 221671520070067 is 760070025176122.

It is a cyclic number.

It is not a de Polignac number, because 221671520070067 - 2¹⁵ = 221671520037299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221671520069999 and 221671520070026.

It is not an unprimeable number, because it can be changed into a prime (221671520070061) 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, 47983743 + ... + 52400215.

It is an arithmetic number, because the mean of its divisors is an integer number (13986089863200).

Almost surely, 2^{221671520070067} is an apocalyptic number.

221671520070067 is a deficient number, since it is larger than the sum of its proper divisors (2105917741133).

221671520070067 is a wasteful number, since it uses less digits than its factorization.

221671520070067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4417794.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 221671520070067 in words is "two hundred twenty-one trillion, six hundred seventy-one billion, five hundred twenty million, seventy thousand, sixty-seven".