11212002210221 has 16 divisors (see below), whose sum is σ = 11535976531200. Its totient is φ = 10891023127488.

The previous prime is 11212002210131. The next prime is 11212002210223. The reversal of 11212002210221 is 12201220021211.

It is not a de Polignac number, because 11212002210221 - 2²² = 11211998015917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212002210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212002210223) 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, 7059095 + ... + 8500283.

It is an arithmetic number, because the mean of its divisors is an integer number (720998533200).

Almost surely, 2^{11212002210221} is an apocalyptic number.

It is an amenable number.

11212002210221 is a deficient number, since it is larger than the sum of its proper divisors (323974320979).

11212002210221 is a wasteful number, since it uses less digits than its factorization.

11212002210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442228.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11212002210221 its reverse (12201220021211), we get a palindrome (23413222231432).

The spelling of 11212002210221 in words is "eleven trillion, two hundred twelve billion, two million, two hundred ten thousand, two hundred twenty-one".