91001120000001 has 16 divisors (see below), whose sum is σ = 127722401701440. Its totient is φ = 57473702392320.

The previous prime is 91001119999987. The next prime is 91001120000029. The reversal of 91001120000001 is 10000002110019.

It is not a de Polignac number, because 91001120000001 - 2¹⁷ = 91001119868929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91001120000801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4755780 + ... + 14304533.

It is an arithmetic number, because the mean of its divisors is an integer number (7982650106340).

Almost surely, 2^{91001120000001} is an apocalyptic number.

It is an amenable number.

91001120000001 is a deficient number, since it is larger than the sum of its proper divisors (36721281701439).

91001120000001 is a wasteful number, since it uses less digits than its factorization.

91001120000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19144096.

The product of its (nonzero) digits is 18, while the sum is 15.

The spelling of 91001120000001 in words is "ninety-one trillion, one billion, one hundred twenty million, one", and thus it is an aban number.