100010100101081 has 2 divisors, whose sum is σ = 100010100101082. Its totient is φ = 100010100101080.

The previous prime is 100010100101077. The next prime is 100010100101111. The reversal of 100010100101081 is 180101001010001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99936410112400 + 73689988681 = 9996820^2 + 271459^2 .

It is a cyclic number.

It is not a de Polignac number, because 100010100101081 - 2² = 100010100101077 is a prime.

It is a super-2 number, since 2×100010100101081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100010100181081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005050050540 + 50005050050541.

It is an arithmetic number, because the mean of its divisors is an integer number (50005050050541).

Almost surely, 2^{100010100101081} is an apocalyptic number.

It is an amenable number.

100010100101081 is a deficient number, since it is larger than the sum of its proper divisors (1).

100010100101081 is an equidigital number, since it uses as much as digits as its factorization.

100010100101081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100010100101081 its reverse (180101001010001), we get a palindrome (280111101111082).

The spelling of 100010100101081 in words is "one hundred trillion, ten billion, one hundred million, one hundred one thousand, eighty-one".