2221031224 has 8 divisors (see below), whose sum is σ = 4164433560. Its totient is φ = 1110515608.

The previous prime is 2221031203. The next prime is 2221031231. The reversal of 2221031224 is 4221301222.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138814444 + ... + 138814459.

It is an arithmetic number, because the mean of its divisors is an integer number (520554195).

Almost surely, 2^2221031224 is an apocalyptic number.

It is an amenable number.

2221031224 is a deficient number, since it is larger than the sum of its proper divisors (1943402336).

2221031224 is a wasteful number, since it uses less digits than its factorization.

2221031224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277628909 (or 277628905 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2221031224 is about 47127.8179422727. The cubic root of 2221031224 is about 1304.7227087086.

Adding to 2221031224 its reverse (4221301222), we get a palindrome (6442332446).

The spelling of 2221031224 in words is "two billion, two hundred twenty-one million, thirty-one thousand, two hundred twenty-four".