111001021020073 has 2 divisors, whose sum is σ = 111001021020074. Its totient is φ = 111001021020072.

The previous prime is 111001021020061. The next prime is 111001021020157. The reversal of 111001021020073 is 370020120100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107936868797289 + 3064152222784 = 10389267^2 + 1750472^2 .

It is a cyclic number.

It is not a de Polignac number, because 111001021020073 - 2¹⁷ = 111001020889001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111001021020073.

It is not a weakly prime, because it can be changed into another prime (111001021020173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500510510036 + 55500510510037.

It is an arithmetic number, because the mean of its divisors is an integer number (55500510510037).

Almost surely, 2^{111001021020073} is an apocalyptic number.

It is an amenable number.

111001021020073 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001021020073 is an equidigital number, since it uses as much as digits as its factorization.

111001021020073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 111001021020073 its reverse (370020120100111), we get a palindrome (481021141120184).

The spelling of 111001021020073 in words is "one hundred eleven trillion, one billion, twenty-one million, twenty thousand, seventy-three".