1220024312012 has 24 divisors (see below), whose sum is σ = 2329449291792. Its totient is φ = 554482227200.

The previous prime is 1220024312011. The next prime is 1220024312033. The reversal of 1220024312012 is 2102134200221.

It is not an unprimeable number, because it can be changed into a prime (1220024312011) 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, 1524053 + ... + 2182380.

It is an arithmetic number, because the mean of its divisors is an integer number (97060387158).

Almost surely, 2^{1220024312012} is an apocalyptic number.

It is an amenable number.

1220024312012 is a deficient number, since it is larger than the sum of its proper divisors (1109424979780).

1220024312012 is a wasteful number, since it uses less digits than its factorization.

1220024312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713929 (or 3713927 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1220024312012 its reverse (2102134200221), we get a palindrome (3322158512233).

The spelling of 1220024312012 in words is "one trillion, two hundred twenty billion, twenty-four million, three hundred twelve thousand, twelve".