221054326601 has 4 divisors (see below), whose sum is σ = 221227161600. Its totient is φ = 220881491604.

The previous prime is 221054326573. The next prime is 221054326651. The reversal of 221054326601 is 106623450122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221054326601 - 2¹⁰ = 221054325577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221054326651) 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, 86415581 + ... + 86418138.

It is an arithmetic number, because the mean of its divisors is an integer number (55306790400).

Almost surely, 2^221054326601 is an apocalyptic number.

It is an amenable number.

221054326601 is a deficient number, since it is larger than the sum of its proper divisors (172834999).

221054326601 is a wasteful number, since it uses less digits than its factorization.

221054326601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172834998.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 221054326601 its reverse (106623450122), we get a palindrome (327677776723).

The spelling of 221054326601 in words is "two hundred twenty-one billion, fifty-four million, three hundred twenty-six thousand, six hundred one".