11212002210021 has 4 divisors (see below), whose sum is σ = 14949336280032. Its totient is φ = 7474668140012.

The previous prime is 11212002210007. The next prime is 11212002210037. The reversal of 11212002210021 is 12001220021211.

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 a cyclic number.

It is not a de Polignac number, because 11212002210021 - 2¹⁸ = 11212001947877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212002210001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868667035001 + ... + 1868667035006.

It is an arithmetic number, because the mean of its divisors is an integer number (3737334070008).

Almost surely, 2^{11212002210021} is an apocalyptic number.

It is an amenable number.

11212002210021 is a deficient number, since it is larger than the sum of its proper divisors (3737334070011).

11212002210021 is an equidigital number, since it uses as much as digits as its factorization.

11212002210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737334070010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11212002210021 its reverse (12001220021211), we get a palindrome (23213222231232).

The spelling of 11212002210021 in words is "eleven trillion, two hundred twelve billion, two million, two hundred ten thousand, twenty-one".