221444330101 has 2 divisors, whose sum is σ = 221444330102. Its totient is φ = 221444330100.

The previous prime is 221444330099. The next prime is 221444330113. The reversal of 221444330101 is 101033444122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213953427601 + 7490902500 = 462551^2 + 86550^2 .

It is a cyclic number.

It is not a de Polignac number, because 221444330101 - 2¹ = 221444330099 is a prime.

Together with 221444330099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221444330141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110722165050 + 110722165051.

It is an arithmetic number, because the mean of its divisors is an integer number (110722165051).

Almost surely, 2^221444330101 is an apocalyptic number.

It is an amenable number.

221444330101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221444330101 is an equidigital number, since it uses as much as digits as its factorization.

221444330101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 221444330101 its reverse (101033444122), we get a palindrome (322477774223).

The spelling of 221444330101 in words is "two hundred twenty-one billion, four hundred forty-four million, three hundred thirty thousand, one hundred one".