1331203241220 has 24 divisors (see below), whose sum is σ = 3727369075584. Its totient is φ = 354987530976.

The previous prime is 1331203241167. The next prime is 1331203241227. The reversal of 1331203241220 is 221423021331.

It is not an unprimeable number, because it can be changed into a prime (1331203241227) 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, 11093360284 + ... + 11093360403.

It is an arithmetic number, because the mean of its divisors is an integer number (155307044816).

Almost surely, 2^{1331203241220} is an apocalyptic number.

1331203241220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331203241220 is an abundant number, since it is smaller than the sum of its proper divisors (2396165834364).

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

1331203241220 is a wasteful number, since it uses less digits than its factorization.

1331203241220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186720699 (or 22186720697 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1331203241220 its reverse (221423021331), we get a palindrome (1552626262551).

The spelling of 1331203241220 in words is "one trillion, three hundred thirty-one billion, two hundred three million, two hundred forty-one thousand, two hundred twenty".