221201112007 has 2 divisors, whose sum is σ = 221201112008. Its totient is φ = 221201112006.

The previous prime is 221201111969. The next prime is 221201112043. The reversal of 221201112007 is 700211102122.

221201112007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221201112007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221201112107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110600556003 + 110600556004.

It is an arithmetic number, because the mean of its divisors is an integer number (110600556004).

Almost surely, 2^221201112007 is an apocalyptic number.

221201112007 is a deficient number, since it is larger than the sum of its proper divisors (1).

221201112007 is an equidigital number, since it uses as much as digits as its factorization.

221201112007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 221201112007 its reverse (700211102122), we get a palindrome (921412214129).

The spelling of 221201112007 in words is "two hundred twenty-one billion, two hundred one million, one hundred twelve thousand, seven".