221112001110101 has 2 divisors, whose sum is σ = 221112001110102. Its totient is φ = 221112001110100.

The previous prime is 221112001110097. The next prime is 221112001110107. The reversal of 221112001110101 is 101011100211122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121496630547601 + 99615370562500 = 11022551^2 + 9980750^2 .

It is a cyclic number.

It is not a de Polignac number, because 221112001110101 - 2² = 221112001110097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221112001110107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556000555050 + 110556000555051.

It is an arithmetic number, because the mean of its divisors is an integer number (110556000555051).

Almost surely, 2^{221112001110101} is an apocalyptic number.

It is an amenable number.

221112001110101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112001110101 is an equidigital number, since it uses as much as digits as its factorization.

221112001110101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221112001110101 its reverse (101011100211122), we get a palindrome (322123101321223).

The spelling of 221112001110101 in words is "two hundred twenty-one trillion, one hundred twelve billion, one million, one hundred ten thousand, one hundred one".