20102121301 has 2 divisors, whose sum is σ = 20102121302. Its totient is φ = 20102121300.

The previous prime is 20102121293. The next prime is 20102121329. The reversal of 20102121301 is 10312120102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18988564401 + 1113556900 = 137799^2 + 33370^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102121301 - 2³ = 20102121293 is a prime.

It is a super-3 number, since 3×20102121301³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102121341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051060650 + 10051060651.

It is an arithmetic number, because the mean of its divisors is an integer number (10051060651).

Almost surely, 2^20102121301 is an apocalyptic number.

It is an amenable number.

20102121301 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102121301 is an equidigital number, since it uses as much as digits as its factorization.

20102121301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20102121301 its reverse (10312120102), we get a palindrome (30414241403).

The spelling of 20102121301 in words is "twenty billion, one hundred two million, one hundred twenty-one thousand, three hundred one".