202120123301 has 2 divisors, whose sum is σ = 202120123302. Its totient is φ = 202120123300.

The previous prime is 202120123291. The next prime is 202120123307. The reversal of 202120123301 is 103321021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180701508100 + 21418615201 = 425090^2 + 146351^2 .

It is a cyclic number.

It is not a de Polignac number, because 202120123301 - 2¹⁰ = 202120122277 is a prime.

It is a super-2 number, since 2×202120123301² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 202120123301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202120123307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060061650 + 101060061651.

It is an arithmetic number, because the mean of its divisors is an integer number (101060061651).

Almost surely, 2^202120123301 is an apocalyptic number.

It is an amenable number.

202120123301 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120123301 is an equidigital number, since it uses as much as digits as its factorization.

202120123301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202120123301 its reverse (103321021202), we get a palindrome (305441144503).

The spelling of 202120123301 in words is "two hundred two billion, one hundred twenty million, one hundred twenty-three thousand, three hundred one".