20113232129 has 2 divisors, whose sum is σ = 20113232130. Its totient is φ = 20113232128.

The previous prime is 20113232107. The next prime is 20113232143. The reversal of 20113232129 is 92123231102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10829524225 + 9283707904 = 104065^2 + 96352^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113232129 - 2¹² = 20113228033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20113232098 and 20113232107.

It is not a weakly prime, because it can be changed into another prime (20113232179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056616064 + 10056616065.

It is an arithmetic number, because the mean of its divisors is an integer number (10056616065).

Almost surely, 2^20113232129 is an apocalyptic number.

It is an amenable number.

20113232129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113232129 is an equidigital number, since it uses as much as digits as its factorization.

20113232129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 20113232129 in words is "twenty billion, one hundred thirteen million, two hundred thirty-two thousand, one hundred twenty-nine".