20200110121 has 2 divisors, whose sum is σ = 20200110122. Its totient is φ = 20200110120.

The previous prime is 20200110089. The next prime is 20200110131. The reversal of 20200110121 is 12101100202.

It is an a-pointer prime, because the next prime (20200110131) can be obtained adding 20200110121 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17666397225 + 2533712896 = 132915^2 + 50336^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200110121 - 2⁵ = 20200110089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200110098 and 20200110107.

It is not a weakly prime, because it can be changed into another prime (20200110131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100055060 + 10100055061.

It is an arithmetic number, because the mean of its divisors is an integer number (10100055061).

Almost surely, 2^20200110121 is an apocalyptic number.

It is an amenable number.

20200110121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200110121 is an equidigital number, since it uses as much as digits as its factorization.

20200110121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20200110121 its reverse (12101100202), we get a palindrome (32301210323).

It can be divided in two parts, 20200 and 110121, that added together give a 4-th power (130321 = 19⁴).

The spelling of 20200110121 in words is "twenty billion, two hundred million, one hundred ten thousand, one hundred twenty-one".