1222636524 has 12 divisors (see below), whose sum is σ = 2852818584. Its totient is φ = 407545504.

The previous prime is 1222636517. The next prime is 1222636561. The reversal of 1222636524 is 4256362221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50943177 + ... + 50943200.

It is an arithmetic number, because the mean of its divisors is an integer number (237734882).

Almost surely, 2^1222636524 is an apocalyptic number.

It is an amenable number.

1222636524 is an abundant number, since it is smaller than the sum of its proper divisors (1630182060).

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

1222636524 is a wasteful number, since it uses less digits than its factorization.

1222636524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101886384 (or 101886382 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 1222636524 is about 34966.2197556442. The cubic root of 1222636524 is about 1069.2989042759.

Adding to 1222636524 its reverse (4256362221), we get a palindrome (5478998745).

The spelling of 1222636524 in words is "one billion, two hundred twenty-two million, six hundred thirty-six thousand, five hundred twenty-four".