22002111011221 has 24 divisors (see below), whose sum is σ = 25879875561792. Its totient is φ = 18515100225600.

The previous prime is 22002111011203. The next prime is 22002111011227. The reversal of 22002111011221 is 12211011120022.

It is not a de Polignac number, because 22002111011221 - 2⁹ = 22002111010709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22002111011195 and 22002111011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002111011227) 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, 45003936 + ... + 45490201.

It is an arithmetic number, because the mean of its divisors is an integer number (1078328148408).

Almost surely, 2^{22002111011221} is an apocalyptic number.

It is an amenable number.

22002111011221 is a deficient number, since it is larger than the sum of its proper divisors (3877764550571).

22002111011221 is a wasteful number, since it uses less digits than its factorization.

22002111011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90494233 (or 90494202 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22002111011221 its reverse (12211011120022), we get a palindrome (34213122131243).

The spelling of 22002111011221 in words is "twenty-two trillion, two billion, one hundred eleven million, eleven thousand, two hundred twenty-one".