1222534512 has 80 divisors (see below), whose sum is σ = 3536916480. Its totient is φ = 404284608.

The previous prime is 1222534483. The next prime is 1222534529. The reversal of 1222534512 is 2154352221.

1222534512 is a `hidden beast` number, since 122 + 2 + 534 + 5 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43723 + ... + 66005.

It is an arithmetic number, because the mean of its divisors is an integer number (44211456).

Almost surely, 2^1222534512 is an apocalyptic number.

1222534512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222534512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1768458240).

1222534512 is an abundant number, since it is smaller than the sum of its proper divisors (2314381968).

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

1222534512 is a wasteful number, since it uses less digits than its factorization.

1222534512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22427 (or 22415 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 1222534512 is about 34964.7610030442. The cubic root of 1222534512 is about 1069.2691640788.

Adding to 1222534512 its reverse (2154352221), we get a palindrome (3376886733).

The spelling of 1222534512 in words is "one billion, two hundred twenty-two million, five hundred thirty-four thousand, five hundred twelve".