1010120200081 has 2 divisors, whose sum is σ = 1010120200082. Its totient is φ = 1010120200080.

The previous prime is 1010120200043. The next prime is 1010120200127. The reversal of 1010120200081 is 1800020210101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008650627856 + 1469572225 = 1004316^2 + 38335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010120200081 - 2¹⁵ = 1010120167313 is a prime.

It is a super-2 number, since 2×1010120200081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1010120300081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505060100040 + 505060100041.

It is an arithmetic number, because the mean of its divisors is an integer number (505060100041).

Almost surely, 2^{1010120200081} is an apocalyptic number.

It is an amenable number.

1010120200081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010120200081 is an equidigital number, since it uses as much as digits as its factorization.

1010120200081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1010120200081 its reverse (1800020210101), we get a palindrome (2810140410182).

The spelling of 1010120200081 in words is "one trillion, ten billion, one hundred twenty million, two hundred thousand, eighty-one".