11222001002221 has 8 divisors (see below), whose sum is σ = 11909560098744. Its totient is φ = 10537490949120.

The previous prime is 11222001002111. The next prime is 11222001002231. The reversal of 11222001002221 is 12220010022211.

It is a happy number.

11222001002221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1802386800900 + 9419614201321 = 1342530^2 + 3069139^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11222001002221 - 2¹⁵ = 11222000969453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11222001002195 and 11222001002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222001002231) 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, 762253270 + ... + 762267991.

It is an arithmetic number, because the mean of its divisors is an integer number (1488695012343).

Almost surely, 2^{11222001002221} is an apocalyptic number.

It is an amenable number.

11222001002221 is a deficient number, since it is larger than the sum of its proper divisors (687559096523).

11222001002221 is a wasteful number, since it uses less digits than its factorization.

11222001002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524521711.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11222001002221 its reverse (12220010022211), we get a palindrome (23442011024432).

The spelling of 11222001002221 in words is "eleven trillion, two hundred twenty-two billion, one million, two thousand, two hundred twenty-one".