2220013332644 has 12 divisors (see below), whose sum is σ = 3885647075100. Its totient is φ = 1109828454048.

The previous prime is 2220013332643. The next prime is 2220013332671. The reversal of 2220013332644 is 4462333100222.

It can be written as a sum of positive squares in 2 ways, for example, as 888943494244 + 1331069838400 = 942838^2 + 1153720^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2220013332644.

It is not an unprimeable number, because it can be changed into a prime (2220013332643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44525039 + ... + 44574870.

It is an arithmetic number, because the mean of its divisors is an integer number (323803922925).

Almost surely, 2^{2220013332644} is an apocalyptic number.

It is an amenable number.

2220013332644 is a deficient number, since it is larger than the sum of its proper divisors (1665633742456).

2220013332644 is a wasteful number, since it uses less digits than its factorization.

2220013332644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89106142 (or 89106140 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 2220013332644 its reverse (4462333100222), we get a palindrome (6682346432866).

The spelling of 2220013332644 in words is "two trillion, two hundred twenty billion, thirteen million, three hundred thirty-two thousand, six hundred forty-four".