8221012060669 has 6 divisors (see below), whose sum is σ = 8399648812094. Its totient is φ = 8046096908280.

The previous prime is 8221012060663. The next prime is 8221012060693. The reversal of 8221012060669 is 9660602101228.

It can be written as a sum of positive squares in only one way, i.e., 7849354788900 + 371657271769 = 2801670^2 + 609637^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8221012060669 is a prime.

It is a super-2 number, since 2×8221012060669² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221012060663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1860797262 + ... + 1860801679.

Almost surely, 2^{8221012060669} is an apocalyptic number.

It is an amenable number.

8221012060669 is a deficient number, since it is larger than the sum of its proper divisors (178636751425).

8221012060669 is an equidigital number, since it uses as much as digits as its factorization.

8221012060669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721599035 (or 3721598988 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 8221012060669 in words is "eight trillion, two hundred twenty-one billion, twelve million, sixty thousand, six hundred sixty-nine".