1000011210181 has 2 divisors, whose sum is σ = 1000011210182. Its totient is φ = 1000011210180.

The previous prime is 1000011210113. The next prime is 1000011210277. The reversal of 1000011210181 is 1810121100001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 746770777281 + 253240432900 = 864159^2 + 503230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000011210181 - 2¹⁵ = 1000011177413 is a prime.

It is a super-2 number, since 2×1000011210181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000011210581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500005605090 + 500005605091.

It is an arithmetic number, because the mean of its divisors is an integer number (500005605091).

Almost surely, 2^{1000011210181} is an apocalyptic number.

It is an amenable number.

1000011210181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000011210181 is an equidigital number, since it uses as much as digits as its factorization.

1000011210181 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1000011210181 its reverse (1810121100001), we get a palindrome (2810132310182).

The spelling of 1000011210181 in words is "one trillion, eleven million, two hundred ten thousand, one hundred eighty-one".