11212121002011 has 8 divisors (see below), whose sum is σ = 14949845216064. Its totient is φ = 7474572061320.

The previous prime is 11212121001989. The next prime is 11212121002037. The reversal of 11212121002011 is 11020012121211.

It is a happy number.

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

It is not a de Polignac number, because 11212121002011 - 2²² = 11212116807707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212121002111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43669005 + ... + 43925006.

It is an arithmetic number, because the mean of its divisors is an integer number (1868730652008).

Almost surely, 2^{11212121002011} is an apocalyptic number.

11212121002011 is a deficient number, since it is larger than the sum of its proper divisors (3737724214053).

11212121002011 is an equidigital number, since it uses as much as digits as its factorization.

11212121002011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87636681.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11212121002011 its reverse (11020012121211), we get a palindrome (22232133123222).

The spelling of 11212121002011 in words is "eleven trillion, two hundred twelve billion, one hundred twenty-one million, two thousand, eleven".