1222536536 has 48 divisors (see below), whose sum is σ = 2549336400. Its totient is φ = 548975232.

The previous prime is 1222536529. The next prime is 1222536559. The reversal of 1222536536 is 6356352221.

It is a junction number, because it is equal to n+sod(n) for n = 1222536496 and 1222536505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37805 + ... + 62243.

It is an arithmetic number, because the mean of its divisors is an integer number (53111175).

Almost surely, 2^1222536536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222536536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274668200).

1222536536 is an abundant number, since it is smaller than the sum of its proper divisors (1326799864).

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

1222536536 is a wasteful number, since it uses less digits than its factorization.

1222536536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24508 (or 24491 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 1222536536 is about 34964.7899464590. The cubic root of 1222536536 is about 1069.2697541643.

Adding to 1222536536 its reverse (6356352221), we get a palindrome (7578888757).

The spelling of 1222536536 in words is "one billion, two hundred twenty-two million, five hundred thirty-six thousand, five hundred thirty-six".