20200210102081 has 2 divisors, whose sum is σ = 20200210102082. Its totient is φ = 20200210102080.

The previous prime is 20200210102063. The next prime is 20200210102123. The reversal of 20200210102081 is 18020101200202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966591154225 + 1233618947856 = 4355065^2 + 1110684^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200210102081 - 2¹⁷ = 20200209971009 is a prime.

It is a super-2 number, since 2×20200210102081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20200210103081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100105051040 + 10100105051041.

It is an arithmetic number, because the mean of its divisors is an integer number (10100105051041).

Almost surely, 2^{20200210102081} is an apocalyptic number.

It is an amenable number.

20200210102081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200210102081 is an equidigital number, since it uses as much as digits as its factorization.

20200210102081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20200210102081 its reverse (18020101200202), we get a palindrome (38220311302283).

The spelling of 20200210102081 in words is "twenty trillion, two hundred billion, two hundred ten million, one hundred two thousand, eighty-one".