1222534000 has 80 divisors (see below), whose sum is σ = 2971122336. Its totient is φ = 486528000.

The previous prime is 1222533979. The next prime is 1222534009. The reversal of 1222534000 is 4352221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222534009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420552 + ... + 423448.

Almost surely, 2^1222534000 is an apocalyptic number.

1222534000 is a gapful number since it is divisible by the number (10) 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 1222534000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485561168).

1222534000 is an abundant number, since it is smaller than the sum of its proper divisors (1748588336).

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

1222534000 is a wasteful number, since it uses less digits than its factorization.

1222534000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3115 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1222534000 is about 34964.7536813861. The cubic root of 1222534000 is about 1069.2690148081.

Adding to 1222534000 its reverse (4352221), we get a palindrome (1226886221).

It can be divided in two parts, 122253 and 4000, that added together give a triangular number (126253 = T₅₀₂).

The spelling of 1222534000 in words is "one billion, two hundred twenty-two million, five hundred thirty-four thousand".