20020101212971 has 2 divisors, whose sum is σ = 20020101212972. Its totient is φ = 20020101212970.

The previous prime is 20020101212953. The next prime is 20020101213031. The reversal of 20020101212971 is 17921210102002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020101212971 - 2³⁵ = 19985741474603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20020101212171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010050606485 + 10010050606486.

It is an arithmetic number, because the mean of its divisors is an integer number (10010050606486).

Almost surely, 2^{20020101212971} is an apocalyptic number.

20020101212971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020101212971 is an equidigital number, since it uses as much as digits as its factorization.

20020101212971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

Adding to 20020101212971 its reverse (17921210102002), we get a palindrome (37941311314973).

The spelling of 20020101212971 in words is "twenty trillion, twenty billion, one hundred one million, two hundred twelve thousand, nine hundred seventy-one".