20971384201 has 2 divisors, whose sum is σ = 20971384202. Its totient is φ = 20971384200.

The previous prime is 20971384183. The next prime is 20971384243. The reversal of 20971384201 is 10248317902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20829416976 + 141967225 = 144324^2 + 11915^2 .

It is a cyclic number.

It is not a de Polignac number, because 20971384201 - 2⁵ = 20971384169 is a prime.

It is not a weakly prime, because it can be changed into another prime (20971384261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10485692100 + 10485692101.

It is an arithmetic number, because the mean of its divisors is an integer number (10485692101).

Almost surely, 2^20971384201 is an apocalyptic number.

It is an amenable number.

20971384201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20971384201 is an equidigital number, since it uses as much as digits as its factorization.

20971384201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 20971384201 in words is "twenty billion, nine hundred seventy-one million, three hundred eighty-four thousand, two hundred one".