20000110121 has 2 divisors, whose sum is σ = 20000110122. Its totient is φ = 20000110120.

The previous prime is 20000110099. The next prime is 20000110147. The reversal of 20000110121 is 12101100002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11307344896 + 8692765225 = 106336^2 + 93235^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000110121 - 2⁶ = 20000110057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000110099 and 20000110108.

It is not a weakly prime, because it can be changed into another prime (20000113121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000055060 + 10000055061.

It is an arithmetic number, because the mean of its divisors is an integer number (10000055061).

Almost surely, 2^20000110121 is an apocalyptic number.

It is an amenable number.

20000110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000110121 is an equidigital number, since it uses as much as digits as its factorization.

20000110121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20000110121 its reverse (12101100002), we get a palindrome (32101210123).

The spelling of 20000110121 in words is "twenty billion, one hundred ten thousand, one hundred twenty-one".