129965999101 has 2 divisors, whose sum is σ = 129965999102. Its totient is φ = 129965999100.

The previous prime is 129965999063. The next prime is 129965999123. The reversal of 129965999101 is 101999569921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92720859001 + 37245140100 = 304501^2 + 192990^2 .

It is a cyclic number.

It is not a de Polignac number, because 129965999101 - 2⁷ = 129965998973 is a prime.

It is a super-2 number, since 2×129965999101² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129965999101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129965999161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64982999550 + 64982999551.

It is an arithmetic number, because the mean of its divisors is an integer number (64982999551).

Almost surely, 2^129965999101 is an apocalyptic number.

It is an amenable number.

129965999101 is a deficient number, since it is larger than the sum of its proper divisors (1).

129965999101 is an equidigital number, since it uses as much as digits as its factorization.

129965999101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3542940, while the sum is 61.

The spelling of 129965999101 in words is "one hundred twenty-nine billion, nine hundred sixty-five million, nine hundred ninety-nine thousand, one hundred one".