1100000401 has 2 divisors, whose sum is σ = 1100000402. Its totient is φ = 1100000400.

The previous prime is 1100000399. The next prime is 1100000413. The reversal of 1100000401 is 1040000011.

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., 1096934400 + 3066001 = 33120^2 + 1751^2 .

It is an emirp because it is prime and its reverse (1040000011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100000401 - 2¹ = 1100000399 is a prime.

Together with 1100000399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1100000431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550000200 + 550000201.

It is an arithmetic number, because the mean of its divisors is an integer number (550000201).

Almost surely, 2^1100000401 is an apocalyptic number.

It is an amenable number.

1100000401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100000401 is an equidigital number, since it uses as much as digits as its factorization.

1100000401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1100000401 is about 33166.2539488559. The cubic root of 1100000401 is about 1032.2802408940.

Adding to 1100000401 its reverse (1040000011), we get a palindrome (2140000412).

It can be divided in two parts, 1100000 and 401, that added together give a square (1100401 = 1049²).

The spelling of 1100000401 in words is "one billion, one hundred million, four hundred one", and thus it is an aban number.