20020970129 has 2 divisors, whose sum is σ = 20020970130. Its totient is φ = 20020970128.

The previous prime is 20020970119. The next prime is 20020970131. The reversal of 20020970129 is 92107902002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19606440529 + 414529600 = 140023^2 + 20360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020970129 is a prime.

Together with 20020970131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020970095 and 20020970104.

It is not a weakly prime, because it can be changed into another prime (20020970119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010485064 + 10010485065.

It is an arithmetic number, because the mean of its divisors is an integer number (10010485065).

Almost surely, 2^20020970129 is an apocalyptic number.

It is an amenable number.

20020970129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020970129 is an equidigital number, since it uses as much as digits as its factorization.

20020970129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 20020970129 in words is "twenty billion, twenty million, nine hundred seventy thousand, one hundred twenty-nine".