111221330401 has 2 divisors, whose sum is σ = 111221330402. Its totient is φ = 111221330400.

The previous prime is 111221330399. The next prime is 111221330449. The reversal of 111221330401 is 104033122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60405350625 + 50815979776 = 245775^2 + 225424^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221330401 - 2¹ = 111221330399 is a prime.

Together with 111221330399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111221333401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610665200 + 55610665201.

It is an arithmetic number, because the mean of its divisors is an integer number (55610665201).

Almost surely, 2^111221330401 is an apocalyptic number.

It is an amenable number.

111221330401 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221330401 is an equidigital number, since it uses as much as digits as its factorization.

111221330401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111221330401 its reverse (104033122111), we get a palindrome (215254452512).

The spelling of 111221330401 in words is "one hundred eleven billion, two hundred twenty-one million, three hundred thirty thousand, four hundred one".