1222019568 has 320 divisors, whose sum is σ = 4632560640. Its totient is φ = 298598400.

The previous prime is 1222019543. The next prime is 1222019593. The reversal of 1222019568 is 8659102221.

It is an interprime number because it is at equal distance from previous prime (1222019543) and next prime (1222019593).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 564408 + ... + 566568.

It is an arithmetic number, because the mean of its divisors is an integer number (14476752).

Almost surely, 2^1222019568 is an apocalyptic number.

1222019568 is a gapful number since it is divisible by the number (18) 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 1222019568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2316280320).

1222019568 is an abundant number, since it is smaller than the sum of its proper divisors (3410541072).

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

1222019568 is a wasteful number, since it uses less digits than its factorization.

1222019568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2201 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1222019568 is about 34957.3964705611. The cubic root of 1222019568 is about 1069.1190139709.

It can be divided in two parts, 122201 and 9568, that added together give a square (131769 = 363²).

The spelling of 1222019568 in words is "one billion, two hundred twenty-two million, nineteen thousand, five hundred sixty-eight".