11222100021221 has 16 divisors (see below), whose sum is σ = 12504579240960. Its totient is φ = 10029714562560.

The previous prime is 11222100021193. The next prime is 11222100021229. The reversal of 11222100021221 is 12212000122211.

11222100021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11222100021221 - 2¹⁸ = 11222099759077 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 11222100021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222100021229) 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, 271346060 + ... + 271387413.

It is an arithmetic number, because the mean of its divisors is an integer number (781536202560).

Almost surely, 2^{11222100021221} is an apocalyptic number.

It is an amenable number.

11222100021221 is a deficient number, since it is larger than the sum of its proper divisors (1282479219739).

11222100021221 is a wasteful number, since it uses less digits than its factorization.

11222100021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542733556.

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

Adding to 11222100021221 its reverse (12212000122211), we get a palindrome (23434100143432).

The spelling of 11222100021221 in words is "eleven trillion, two hundred twenty-two billion, one hundred million, twenty-one thousand, two hundred twenty-one".