20201220120101 has 2 divisors, whose sum is σ = 20201220120102. Its totient is φ = 20201220120100.

The previous prime is 20201220120083. The next prime is 20201220120119. The reversal of 20201220120101 is 10102102210202.

It is a balanced prime because it is at equal distance from previous prime (20201220120083) and next prime (20201220120119).

It can be written as a sum of positive squares in only one way, i.e., 20149235664100 + 51984456001 = 4488790^2 + 228001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201220120101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201220122101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100610060050 + 10100610060051.

It is an arithmetic number, because the mean of its divisors is an integer number (10100610060051).

Almost surely, 2^{20201220120101} is an apocalyptic number.

It is an amenable number.

20201220120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201220120101 is an equidigital number, since it uses as much as digits as its factorization.

20201220120101 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 20201220120101 its reverse (10102102210202), we get a palindrome (30303322330303).

The spelling of 20201220120101 in words is "twenty trillion, two hundred one billion, two hundred twenty million, one hundred twenty thousand, one hundred one".