920101009091 has 12 divisors (see below), whose sum is σ = 1011438685152. Its totient is φ = 836382690000.

The previous prime is 920101009067. The next prime is 920101009099. The reversal of 920101009091 is 190900101029.

It is not a de Polignac number, because 920101009091 - 2¹⁸ = 920100746947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920101009099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1090886 + ... + 1740756.

It is an arithmetic number, because the mean of its divisors is an integer number (84286557096).

Almost surely, 2^920101009091 is an apocalyptic number.

920101009091 is a deficient number, since it is larger than the sum of its proper divisors (91337676061).

920101009091 is a wasteful number, since it uses less digits than its factorization.

920101009091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661594 (or 661583 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 920101009091 in words is "nine hundred twenty billion, one hundred one million, nine thousand, ninety-one".