1222023040 has 128 divisors (see below), whose sum is σ = 3420688320. Its totient is φ = 408698880.

The previous prime is 1222023029. The next prime is 1222023043. The reversal of 1222023040 is 403202221.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222023043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180354 + ... + 187006.

Almost surely, 2^1222023040 is an apocalyptic number.

1222023040 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 1222023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710344160).

1222023040 is an abundant number, since it is smaller than the sum of its proper divisors (2198665280).

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

1222023040 is an equidigital number, since it uses as much as digits as its factorization.

1222023040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720 (or 6708 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1222023040 is about 34957.4461309747. The cubic root of 1222023040 is about 1069.1200264964.

Adding to 1222023040 its reverse (403202221), we get a palindrome (1625225261).

The spelling of 1222023040 in words is "one billion, two hundred twenty-two million, twenty-three thousand, forty".