1223320322112 has 56 divisors (see below), whose sum is σ = 3699087644736. Its totient is φ = 349520091648.

The previous prime is 1223320322101. The next prime is 1223320322123. The reversal of 1223320322112 is 2112230233221.

It is an interprime number because it is at equal distance from previous prime (1223320322101) and next prime (1223320322123).

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1223320322112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455102943 + ... + 455105630.

Almost surely, 2^{1223320322112} is an apocalyptic number.

1223320322112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1223320322112 is an abundant number, since it is smaller than the sum of its proper divisors (2475767322624).

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

1223320322112 is an equidigital number, since it uses as much as digits as its factorization.

1223320322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910208595 (or 910208585 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1223320322112 its reverse (2112230233221), we get a palindrome (3335550555333).

The spelling of 1223320322112 in words is "one trillion, two hundred twenty-three billion, three hundred twenty million, three hundred twenty-two thousand, one hundred twelve".