11011901001 has 16 divisors (see below), whose sum is σ = 14964013440. Its totient is φ = 7200610560.

The previous prime is 11011900993. The next prime is 11011901051. The reversal of 11011901001 is 10010911011.

It is not a de Polignac number, because 11011901001 - 2³ = 11011900993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11011901051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664545 + ... + 680913.

It is an arithmetic number, because the mean of its divisors is an integer number (935250840).

Almost surely, 2^11011901001 is an apocalyptic number.

It is an amenable number.

11011901001 is a deficient number, since it is larger than the sum of its proper divisors (3952112439).

11011901001 is a wasteful number, since it uses less digits than its factorization.

11011901001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20656.

The product of its (nonzero) digits is 9, while the sum is 15.

The spelling of 11011901001 in words is "eleven billion, eleven million, nine hundred one thousand, one".