2221684445248 has 14 divisors (see below), whose sum is σ = 4408655071166. Its totient is φ = 1110842222592.

The previous prime is 2221684445231. The next prime is 2221684445249. The reversal of 2221684445248 is 8425444861222.

It can be written as a sum of positive squares in only one way, i.e., 2074498657344 + 147185787904 = 1440312^2 + 383648^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2221684445195 and 2221684445204.

It is not an unprimeable number, because it can be changed into a prime (2221684445249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17356909665 + ... + 17356909792.

Almost surely, 2^{2221684445248} is an apocalyptic number.

It is an amenable number.

2221684445248 is a deficient number, since it is larger than the sum of its proper divisors (2186970625918).

2221684445248 is an equidigital number, since it uses as much as digits as its factorization.

2221684445248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34713819469 (or 34713819459 counting only the distinct ones).

The product of its digits is 7864320, while the sum is 52.

The spelling of 2221684445248 in words is "two trillion, two hundred twenty-one billion, six hundred eighty-four million, four hundred forty-five thousand, two hundred forty-eight".