10202122101989 has 2 divisors, whose sum is σ = 10202122101990. Its totient is φ = 10202122101988.

The previous prime is 10202122101967. The next prime is 10202122102001. The reversal of 10202122101989 is 98910122120201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6391946932900 + 3810175169089 = 2528230^2 + 1951967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10202122101989 is a prime.

It is a super-2 number, since 2×10202122101989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202122101929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101061050994 + 5101061050995.

It is an arithmetic number, because the mean of its divisors is an integer number (5101061050995).

Almost surely, 2^{10202122101989} is an apocalyptic number.

It is an amenable number.

10202122101989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202122101989 is an equidigital number, since it uses as much as digits as its factorization.

10202122101989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 10202122101989 in words is "ten trillion, two hundred two billion, one hundred twenty-two million, one hundred one thousand, nine hundred eighty-nine".