221064601541 has 8 divisors (see below), whose sum is σ = 252672374784. Its totient is φ = 189463607280.

The previous prime is 221064601519. The next prime is 221064601573. The reversal of 221064601541 is 145106460122.

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 221064601541 - 2³⁴ = 203884732357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221064601498 and 221064601507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221064601141) 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, 1624670 + ... + 1755471.

It is an arithmetic number, because the mean of its divisors is an integer number (31584046848).

Almost surely, 2^221064601541 is an apocalyptic number.

It is an amenable number.

221064601541 is a deficient number, since it is larger than the sum of its proper divisors (31607773243).

221064601541 is an equidigital number, since it uses as much as digits as its factorization.

221064601541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389491.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 221064601541 in words is "two hundred twenty-one billion, sixty-four million, six hundred one thousand, five hundred forty-one".