8221911504213 has 96 divisors (see below), whose sum is σ = 12828721441536. Its totient is φ = 4664137984000.

The previous prime is 8221911504197. The next prime is 8221911504217. The reversal of 8221911504213 is 3124051191228.

It is not a de Polignac number, because 8221911504213 - 2⁴ = 8221911504197 is a prime.

It is a super-2 number, since 2×8221911504213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221911504217) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 884737795 + ... + 884747087.

It is an arithmetic number, because the mean of its divisors is an integer number (133632515016).

Almost surely, 2^{8221911504213} is an apocalyptic number.

It is an amenable number.

8221911504213 is a deficient number, since it is larger than the sum of its proper divisors (4606809937323).

8221911504213 is a wasteful number, since it uses less digits than its factorization.

8221911504213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10107 (or 10096 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 8221911504213 in words is "eight trillion, two hundred twenty-one billion, nine hundred eleven million, five hundred four thousand, two hundred thirteen".