102102220989161 has 2 divisors, whose sum is σ = 102102220989162. Its totient is φ = 102102220989160.

The previous prime is 102102220989149. The next prime is 102102220989211. The reversal of 102102220989161 is 161989022201201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78498607683136 + 23603613306025 = 8859944^2 + 4858355^2 .

It is a cyclic number.

It is not a de Polignac number, because 102102220989161 - 2³⁴ = 102085041119977 is a prime.

It is not a weakly prime, because it can be changed into another prime (102102220982161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051110494580 + 51051110494581.

It is an arithmetic number, because the mean of its divisors is an integer number (51051110494581).

Almost surely, 2^{102102220989161} is an apocalyptic number.

It is an amenable number.

102102220989161 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102220989161 is an equidigital number, since it uses as much as digits as its factorization.

102102220989161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 102102220989161 in words is "one hundred two trillion, one hundred two billion, two hundred twenty million, nine hundred eighty-nine thousand, one hundred sixty-one".