1119901001 has 2 divisors, whose sum is σ = 1119901002. Its totient is φ = 1119901000.

The previous prime is 1119900967. The next prime is 1119901043. The reversal of 1119901001 is 1001099111.

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., 1003368976 + 116532025 = 31676^2 + 10795^2 .

It is a cyclic number.

It is not a de Polignac number, because 1119901001 - 2¹⁸ = 1119638857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1119901301) 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, 559950500 + 559950501.

It is an arithmetic number, because the mean of its divisors is an integer number (559950501).

Almost surely, 2^1119901001 is an apocalyptic number.

It is an amenable number.

1119901001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1119901001 is an equidigital number, since it uses as much as digits as its factorization.

1119901001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 23.

The square root of 1119901001 is about 33464.9219482132. The cubic root of 1119901001 is about 1038.4682211517.

The spelling of 1119901001 in words is "one billion, one hundred nineteen million, nine hundred one thousand, one".