91210010001 has 8 divisors (see below), whose sum is σ = 132669105504. Its totient is φ = 55278793920.

The previous prime is 91210009993. The next prime is 91210010009. The reversal of 91210010001 is 10001001219.

It is an interprime number because it is at equal distance from previous prime (91210009993) and next prime (91210010009).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91210010001 - 2³ = 91210009993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91210010009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1381969816 + ... + 1381969881.

It is an arithmetic number, because the mean of its divisors is an integer number (16583638188).

Almost surely, 2^91210010001 is an apocalyptic number.

It is an amenable number.

91210010001 is a deficient number, since it is larger than the sum of its proper divisors (41459095503).

91210010001 is a wasteful number, since it uses less digits than its factorization.

91210010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763939711.

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

The spelling of 91210010001 in words is "ninety-one billion, two hundred ten million, ten thousand, one".