1000110121973 has 2 divisors, whose sum is σ = 1000110121974. Its totient is φ = 1000110121972.

The previous prime is 1000110121951. The next prime is 1000110122021. The reversal of 1000110121973 is 3791210110001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935866629604 + 64243492369 = 967402^2 + 253463^2 .

It is an emirp because it is prime and its reverse (3791210110001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000110121973 - 2¹⁰ = 1000110120949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000110121943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500055060986 + 500055060987.

It is an arithmetic number, because the mean of its divisors is an integer number (500055060987).

Almost surely, 2^{1000110121973} is an apocalyptic number.

It is an amenable number.

1000110121973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000110121973 is an equidigital number, since it uses as much as digits as its factorization.

1000110121973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 26.

Adding to 1000110121973 its reverse (3791210110001), we get a palindrome (4791320231974).

The spelling of 1000110121973 in words is "one trillion, one hundred ten million, one hundred twenty-one thousand, nine hundred seventy-three".