11222220002221 has 16 divisors (see below), whose sum is σ = 11658591076608. Its totient is φ = 10793614249600.

The previous prime is 11222220002129. The next prime is 11222220002251. The reversal of 11222220002221 is 12220002222211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222220002221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222220002251) 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, 48857175 + ... + 49086331.

It is an arithmetic number, because the mean of its divisors is an integer number (728661942288).

Almost surely, 2^{11222220002221} is an apocalyptic number.

It is an amenable number.

11222220002221 is a deficient number, since it is larger than the sum of its proper divisors (436371074387).

11222220002221 is a wasteful number, since it uses less digits than its factorization.

11222220002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246092.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 11222220002221 its reverse (12220002222211), we get a palindrome (23442222224432).

The spelling of 11222220002221 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty million, two thousand, two hundred twenty-one".