1222203264 has 64 divisors (see below), whose sum is σ = 3250140240. Its totient is φ = 406941696.

The previous prime is 1222203251. The next prime is 1222203341. The reversal of 1222203264 is 4623022221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612252 + ... + 614244.

Almost surely, 2^1222203264 is an apocalyptic number.

It is an amenable number.

1222203264 is an abundant number, since it is smaller than the sum of its proper divisors (2027936976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222203264 is a wasteful number, since it uses less digits than its factorization.

1222203264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607 (or 3595 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1222203264 is about 34960.0237986189. The cubic root of 1222203264 is about 1069.1725818656.

Adding to 1222203264 its reverse (4623022221), we get a palindrome (5845225485).

The spelling of 1222203264 in words is "one billion, two hundred twenty-two million, two hundred three thousand, two hundred sixty-four".