1320003211220 has 24 divisors (see below), whose sum is σ = 2791949244000. Its totient is φ = 524202712992.

The previous prime is 1320003211217. The next prime is 1320003211231. The reversal of 1320003211220 is 221123000231.

It is a super-2 number, since 2×1320003211220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 237407870 + ... + 237413429.

It is an arithmetic number, because the mean of its divisors is an integer number (116331218500).

Almost surely, 2^{1320003211220} is an apocalyptic number.

1320003211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320003211220 is an abundant number, since it is smaller than the sum of its proper divisors (1471946032780).

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

1320003211220 is a wasteful number, since it uses less digits than its factorization.

1320003211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474821447 (or 474821445 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1320003211220 its reverse (221123000231), we get a palindrome (1541126211451).

The spelling of 1320003211220 in words is "one trillion, three hundred twenty billion, three million, two hundred eleven thousand, two hundred twenty".