2220012020720 has 40 divisors (see below), whose sum is σ = 5558568562176. Its totient is φ = 819696745728.

The previous prime is 2220012020627. The next prime is 2220012020729. The reversal of 2220012020720 is 270202100222.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2220012020692 and 2220012020701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220012020729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067312432 + ... + 1067314511.

Almost surely, 2^{2220012020720} is an apocalyptic number.

2220012020720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220012020720 is an abundant number, since it is smaller than the sum of its proper divisors (3338556541456).

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

2220012020720 is a wasteful number, since it uses less digits than its factorization.

2220012020720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134626969 (or 2134626963 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

Adding to 2220012020720 its reverse (270202100222), we get a palindrome (2490214120942).

The spelling of 2220012020720 in words is "two trillion, two hundred twenty billion, twelve million, twenty thousand, seven hundred twenty".