1222344420 has 144 divisors (see below), whose sum is σ = 3801518784. Its totient is φ = 293216000.

The previous prime is 1222344397. The next prime is 1222344427. The reversal of 1222344420 is 244432221.

1222344420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1222344420² = 2988251762210272800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222344427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 732427 + ... + 734093.

It is an arithmetic number, because the mean of its divisors is an integer number (26399436).

Almost surely, 2^1222344420 is an apocalyptic number.

1222344420 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 1222344420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900759392).

1222344420 is an abundant number, since it is smaller than the sum of its proper divisors (2579174364).

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

1222344420 is a wasteful number, since it uses less digits than its factorization.

1222344420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1222344420 is about 34962.0425604683. The cubic root of 1222344420 is about 1069.2137409537.

Adding to 1222344420 its reverse (244432221), we get a palindrome (1466776641).

The spelling of 1222344420 in words is "one billion, two hundred twenty-two million, three hundred forty-four thousand, four hundred twenty".