11212011010209 has 4 divisors (see below), whose sum is σ = 14949348013616. Its totient is φ = 7474674006804.

The previous prime is 11212011010169. The next prime is 11212011010219. The reversal of 11212011010209 is 90201011021211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11212011010209 - 2³³ = 11203421075617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11212011010219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868668501699 + ... + 1868668501704.

It is an arithmetic number, because the mean of its divisors is an integer number (3737337003404).

Almost surely, 2^{11212011010209} is an apocalyptic number.

It is an amenable number.

11212011010209 is a deficient number, since it is larger than the sum of its proper divisors (3737337003407).

11212011010209 is an equidigital number, since it uses as much as digits as its factorization.

11212011010209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737337003406.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 11212011010209 in words is "eleven trillion, two hundred twelve billion, eleven million, ten thousand, two hundred nine".