2011212000091 has 16 divisors (see below), whose sum is σ = 2346640920000. Its totient is φ = 1723010924544.

The previous prime is 2011212000089. The next prime is 2011212000121. The reversal of 2011212000091 is 1900002121102.

It is a happy number.

It is not a de Polignac number, because 2011212000091 - 2¹ = 2011212000089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011212000011) 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, 835750 + ... + 2172763.

It is an arithmetic number, because the mean of its divisors is an integer number (146665057500).

Almost surely, 2^{2011212000091} is an apocalyptic number.

2011212000091 is a deficient number, since it is larger than the sum of its proper divisors (335428919909).

2011212000091 is an equidigital number, since it uses as much as digits as its factorization.

2011212000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010483 (or 3010469 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2011212000091 its reverse (1900002121102), we get a palindrome (3911214121193).

The spelling of 2011212000091 in words is "two trillion, eleven billion, two hundred twelve million, ninety-one", and thus it is an aban number.