1000122121013 has 2 divisors, whose sum is σ = 1000122121014. Its totient is φ = 1000122121012.

The previous prime is 1000122121003. The next prime is 1000122121121. The reversal of 1000122121013 is 3101212210001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832924546609 + 167197574404 = 912647^2 + 408898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000122121013 - 2⁴ = 1000122120997 is a prime.

It is a super-2 number, since 2×1000122121013² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000122121003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500061060506 + 500061060507.

It is an arithmetic number, because the mean of its divisors is an integer number (500061060507).

Almost surely, 2^{1000122121013} is an apocalyptic number.

It is an amenable number.

1000122121013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000122121013 is an equidigital number, since it uses as much as digits as its factorization.

1000122121013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1000122121013 its reverse (3101212210001), we get a palindrome (4101334331014).

The spelling of 1000122121013 in words is "one trillion, one hundred twenty-two million, one hundred twenty-one thousand, thirteen".