1220230440312 has 32 divisors (see below), whose sum is σ = 3285235801680. Its totient is φ = 375455520000.

The previous prime is 1220230440287. The next prime is 1220230440313. The reversal of 1220230440312 is 2130440320221.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220230440313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955497189 + ... + 1955497812.

Almost surely, 2^{1220230440312} is an apocalyptic number.

1220230440312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220230440312 is an abundant number, since it is smaller than the sum of its proper divisors (2065005361368).

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

1220230440312 is a wasteful number, since it uses less digits than its factorization.

1220230440312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910995023 (or 3910995019 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1220230440312 its reverse (2130440320221), we get a palindrome (3350670760533).

The spelling of 1220230440312 in words is "one trillion, two hundred twenty billion, two hundred thirty million, four hundred forty thousand, three hundred twelve".