221201201011101 has 4 divisors (see below), whose sum is σ = 294934934681472. Its totient is φ = 147467467340732.

The previous prime is 221201201011099. The next prime is 221201201011121. The reversal of 221201201011101 is 101110102102122.

It is a happy number.

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 221201201011101 - 2¹ = 221201201011099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221201201011121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36866866835181 + ... + 36866866835186.

It is an arithmetic number, because the mean of its divisors is an integer number (73733733670368).

Almost surely, 2^{221201201011101} is an apocalyptic number.

It is an amenable number.

221201201011101 is a deficient number, since it is larger than the sum of its proper divisors (73733733670371).

221201201011101 is an equidigital number, since it uses as much as digits as its factorization.

221201201011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73733733670370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221201201011101 its reverse (101110102102122), we get a palindrome (322311303113223).

The spelling of 221201201011101 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred one million, eleven thousand, one hundred one".