21220000002213 has 16 divisors (see below), whose sum is σ = 28769309150400. Its totient is φ = 13910435130240.

The previous prime is 21220000002211. The next prime is 21220000002217. The reversal of 21220000002213 is 31220000002212.

It is a happy number.

It is not a de Polignac number, because 21220000002213 - 2¹ = 21220000002211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21220000002192 and 21220000002201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220000002211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219497683 + ... + 219594336.

It is an arithmetic number, because the mean of its divisors is an integer number (1798081821900).

Almost surely, 2^{21220000002213} is an apocalyptic number.

It is an amenable number.

21220000002213 is a deficient number, since it is larger than the sum of its proper divisors (7549309148187).

21220000002213 is a wasteful number, since it uses less digits than its factorization.

21220000002213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439092292.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21220000002213 its reverse (31220000002212), we get a palindrome (52440000004425).

Subtracting 21220000002213 from its reverse (31220000002212), we obtain a palindrome (9999999999999).

The spelling of 21220000002213 in words is "twenty-one trillion, two hundred twenty billion, two thousand, two hundred thirteen".