2010101091 has 16 divisors (see below), whose sum is σ = 2769634560. Its totient is φ = 1295935200.

The previous prime is 2010101089. The next prime is 2010101129. The reversal of 2010101091 is 1901010102.

It is not a de Polignac number, because 2010101091 - 2¹ = 2010101089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2010101091.

It is not an unprimeable number, because it can be changed into a prime (2010101021) 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, 64111 + ... + 90168.

It is an arithmetic number, because the mean of its divisors is an integer number (173102160).

Almost surely, 2^2010101091 is an apocalyptic number.

2010101091 is a deficient number, since it is larger than the sum of its proper divisors (759533469).

2010101091 is a wasteful number, since it uses less digits than its factorization.

2010101091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154426.

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

The square root of 2010101091 is about 44834.1509454567. The cubic root of 2010101091 is about 1262.0385851794.

Adding to 2010101091 its reverse (1901010102), we get a palindrome (3911111193).

The spelling of 2010101091 in words is "two billion, ten million, one hundred one thousand, ninety-one".