1011101081 has 2 divisors, whose sum is σ = 1011101082. Its totient is φ = 1011101080.

The previous prime is 1011101059. The next prime is 1011101089. The reversal of 1011101081 is 1801011101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007491081 + 3610000 = 31741^2 + 1900^2 .

It is an emirp because it is prime and its reverse (1801011101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011101081 is a prime.

It is a super-2 number, since 2×1011101081² = 2044650791998737122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1011101089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505550540 + 505550541.

It is an arithmetic number, because the mean of its divisors is an integer number (505550541).

Almost surely, 2^1011101081 is an apocalyptic number.

It is an amenable number.

1011101081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011101081 is an equidigital number, since it uses as much as digits as its factorization.

1011101081 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.

The square root of 1011101081 is about 31797.8156639729. The cubic root of 1011101081 is about 1003.6867514932.

Adding to 1011101081 its reverse (1801011101), we get a palindrome (2812112182).

The spelling of 1011101081 in words is "one billion, eleven million, one hundred one thousand, eighty-one".