202060139621 has 2 divisors, whose sum is σ = 202060139622. Its totient is φ = 202060139620.

The previous prime is 202060139597. The next prime is 202060139653. The reversal of 202060139621 is 126931060202.

It is a happy number.

202060139621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (202060139653) can be obtained adding 202060139621 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116028796900 + 86031342721 = 340630^2 + 293311^2 .

It is a cyclic number.

It is not a de Polignac number, because 202060139621 - 2¹⁸ = 202059877477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202060139681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101030069810 + 101030069811.

It is an arithmetic number, because the mean of its divisors is an integer number (101030069811).

Almost surely, 2^202060139621 is an apocalyptic number.

It is an amenable number.

202060139621 is a deficient number, since it is larger than the sum of its proper divisors (1).

202060139621 is an equidigital number, since it uses as much as digits as its factorization.

202060139621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

Adding to 202060139621 its reverse (126931060202), we get a palindrome (328991199823).

The spelling of 202060139621 in words is "two hundred two billion, sixty million, one hundred thirty-nine thousand, six hundred twenty-one".