11221002202221 has 24 divisors (see below), whose sum is σ = 18523666266560. Its totient is φ = 6411964193856.

The previous prime is 11221002202213. The next prime is 11221002202259. The reversal of 11221002202221 is 12220220012211.

It is a happy number.

11221002202221 is a `hidden beast` number, since 1 + 1 + 221 + 0 + 0 + 220 + 2 + 221 = 666.

It is not a de Polignac number, because 11221002202221 - 2³ = 11221002202213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11221002202194 and 11221002202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221002202021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13455786 + ... + 14265348.

Almost surely, 2^{11221002202221} is an apocalyptic number.

It is an amenable number.

11221002202221 is a deficient number, since it is larger than the sum of its proper divisors (7302664064339).

11221002202221 is a wasteful number, since it uses less digits than its factorization.

11221002202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029585 (or 1029582 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11221002202221 its reverse (12220220012211), we get a palindrome (23441222214432).

The spelling of 11221002202221 in words is "eleven trillion, two hundred twenty-one billion, two million, two hundred two thousand, two hundred twenty-one".