221101212201001 has 8 divisors (see below), whose sum is σ = 249518609380800. Its totient is φ = 194070029517840.

The previous prime is 221101212200971. The next prime is 221101212201007. The reversal of 221101212201001 is 100102212101122.

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 221101212201001 - 2⁷ = 221101212200873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221101212201007) 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, 346553623821 + ... + 346553624458.

It is an arithmetic number, because the mean of its divisors is an integer number (31189826172600).

Almost surely, 2^{221101212201001} is an apocalyptic number.

It is an amenable number.

221101212201001 is a deficient number, since it is larger than the sum of its proper divisors (28417397179799).

221101212201001 is a wasteful number, since it uses less digits than its factorization.

221101212201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693107248319.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221101212201001 its reverse (100102212101122), we get a palindrome (321203424302123).

The spelling of 221101212201001 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twelve million, two hundred one thousand, one".