10992001081 has 2 divisors, whose sum is σ = 10992001082. Its totient is φ = 10992001080.

The previous prime is 10992001073. The next prime is 10992001127. The reversal of 10992001081 is 18010029901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6511037481 + 4480963600 = 80691^2 + 66940^2 .

It is a cyclic number.

It is not a de Polignac number, because 10992001081 - 2³ = 10992001073 is a prime.

It is a super-2 number, since 2×10992001081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10992001681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5496000540 + 5496000541.

It is an arithmetic number, because the mean of its divisors is an integer number (5496000541).

Almost surely, 2^10992001081 is an apocalyptic number.

It is an amenable number.

10992001081 is a deficient number, since it is larger than the sum of its proper divisors (1).

10992001081 is an equidigital number, since it uses as much as digits as its factorization.

10992001081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 10992001081 in words is "ten billion, nine hundred ninety-two million, one thousand, eighty-one".