11212012110021 has 8 divisors (see below), whose sum is σ = 14949509082624. Its totient is φ = 7474594938720.

The previous prime is 11212012110007. The next prime is 11212012110083. The reversal of 11212012110021 is 12001121021211.

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 11212012110021 - 2¹⁷ = 11212011978949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212012110001) 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, 19621720 + ... + 20185041.

It is an arithmetic number, because the mean of its divisors is an integer number (1868688635328).

Almost surely, 2^{11212012110021} is an apocalyptic number.

It is an amenable number.

11212012110021 is a deficient number, since it is larger than the sum of its proper divisors (3737496972603).

11212012110021 is an equidigital number, since it uses as much as digits as its factorization.

11212012110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39900651.

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

Adding to 11212012110021 its reverse (12001121021211), we get a palindrome (23213133131232).

The spelling of 11212012110021 in words is "eleven trillion, two hundred twelve billion, twelve million, one hundred ten thousand, twenty-one".