20129190101 has 2 divisors, whose sum is σ = 20129190102. Its totient is φ = 20129190100.

The previous prime is 20129190089. The next prime is 20129190113. The reversal of 20129190101 is 10109192102.

It is a balanced prime because it is at equal distance from previous prime (20129190089) and next prime (20129190113).

It can be written as a sum of positive squares in only one way, i.e., 20125678225 + 3511876 = 141865^2 + 1874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20129190101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20129190161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10064595050 + 10064595051.

It is an arithmetic number, because the mean of its divisors is an integer number (10064595051).

Almost surely, 2^20129190101 is an apocalyptic number.

It is an amenable number.

20129190101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20129190101 is an equidigital number, since it uses as much as digits as its factorization.

20129190101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 20129190101 in words is "twenty billion, one hundred twenty-nine million, one hundred ninety thousand, one hundred one".