1222533450 has 72 divisors (see below), whose sum is σ = 3354481728. Its totient is φ = 319067040.

The previous prime is 1222533437. The next prime is 1222533463. The reversal of 1222533450 is 543352221.

It is a happy number.

1222533450 is a `hidden beast` number, since 122 + 2 + 533 + 4 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1222533437) and next prime (1222533463).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7752 + ... + 50051.

It is an arithmetic number, because the mean of its divisors is an integer number (46590024).

Almost surely, 2^1222533450 is an apocalyptic number.

1222533450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222533450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1677240864).

1222533450 is an abundant number, since it is smaller than the sum of its proper divisors (2131948278).

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

1222533450 is a wasteful number, since it uses less digits than its factorization.

1222533450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57868 (or 57860 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1222533450 is about 34964.7458163219. The cubic root of 1222533450 is about 1069.2688544586.

Adding to 1222533450 its reverse (543352221), we get a palindrome (1765885671).

The spelling of 1222533450 in words is "one billion, two hundred twenty-two million, five hundred thirty-three thousand, four hundred fifty".