10202121119989 has 2 divisors, whose sum is σ = 10202121119990. Its totient is φ = 10202121119988.

The previous prime is 10202121119969. The next prime is 10202121120047. The reversal of 10202121119989 is 98991112120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5894130295089 + 4307990824900 = 2427783^2 + 2075570^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202121119989 - 2²⁵ = 10202087565557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202121119969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101060559994 + 5101060559995.

It is an arithmetic number, because the mean of its divisors is an integer number (5101060559995).

Almost surely, 2^{10202121119989} is an apocalyptic number.

It is an amenable number.

10202121119989 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202121119989 is an equidigital number, since it uses as much as digits as its factorization.

10202121119989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 46.

The spelling of 10202121119989 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred eighty-nine".