1220301000312 has 32 divisors (see below), whose sum is σ = 3125161100880. Its totient is φ = 396845853440.

The previous prime is 1220301000263. The next prime is 1220301000319. The reversal of 1220301000312 is 2130001030221.

It is a junction number, because it is equal to n+sod(n) for n = 1220301000291 and 1220301000300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220301000319) 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, 620070663 + ... + 620072630.

Almost surely, 2^{1220301000312} is an apocalyptic number.

1220301000312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220301000312 is an abundant number, since it is smaller than the sum of its proper divisors (1904860100568).

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

1220301000312 is a wasteful number, since it uses less digits than its factorization.

1220301000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240143343 (or 1240143339 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1220301000312 its reverse (2130001030221), we get a palindrome (3350302030533).

The spelling of 1220301000312 in words is "one trillion, two hundred twenty billion, three hundred one million, three hundred twelve", and thus it is an aban number.