20200120122101 has 2 divisors, whose sum is σ = 20200120122102. Its totient is φ = 20200120122100.

The previous prime is 20200120122089. The next prime is 20200120122137. The reversal of 20200120122101 is 10122102100202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17816832558001 + 2383287564100 = 4220999^2 + 1543790^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200120122101 - 2²⁶ = 20200053013237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200120127101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100060061050 + 10100060061051.

It is an arithmetic number, because the mean of its divisors is an integer number (10100060061051).

Almost surely, 2^{20200120122101} is an apocalyptic number.

It is an amenable number.

20200120122101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200120122101 is an equidigital number, since it uses as much as digits as its factorization.

20200120122101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20200120122101 its reverse (10122102100202), we get a palindrome (30322222222303).

The spelling of 20200120122101 in words is "twenty trillion, two hundred billion, one hundred twenty million, one hundred twenty-two thousand, one hundred one".