2212403644 has 24 divisors (see below), whose sum is σ = 4225189248. Its totient is φ = 1005278640.

The previous prime is 2212403617. The next prime is 2212403729. The reversal of 2212403644 is 4463042122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145297 + ... + 159799.

It is an arithmetic number, because the mean of its divisors is an integer number (176049552).

Almost surely, 2^2212403644 is an apocalyptic number.

It is an amenable number.

2212403644 is a deficient number, since it is larger than the sum of its proper divisors (2012785604).

2212403644 is a wasteful number, since it uses less digits than its factorization.

2212403644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17985 (or 17983 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 2212403644 is about 47036.1950416910. The cubic root of 2212403644 is about 1303.0311211320.

Adding to 2212403644 its reverse (4463042122), we get a palindrome (6675445766).

The spelling of 2212403644 in words is "two billion, two hundred twelve million, four hundred three thousand, six hundred forty-four".