1331114001220 has 12 divisors (see below), whose sum is σ = 2795339402604. Its totient is φ = 532445600480.

The previous prime is 1331114001211. The next prime is 1331114001227. The reversal of 1331114001220 is 221004111331.

It can be written as a sum of positive squares in 2 ways, for example, as 738802135296 + 592311865924 = 859536^2 + 769618^2 .

It is a super-2 number, since 2×1331114001220² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331114001227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33277850011 + ... + 33277850050.

It is an arithmetic number, because the mean of its divisors is an integer number (232944950217).

Almost surely, 2^{1331114001220} is an apocalyptic number.

1331114001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331114001220 is an abundant number, since it is smaller than the sum of its proper divisors (1464225401384).

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

1331114001220 is a wasteful number, since it uses less digits than its factorization.

1331114001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66555700070 (or 66555700068 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1331114001220 its reverse (221004111331), we get a palindrome (1552118112551).

The spelling of 1331114001220 in words is "one trillion, three hundred thirty-one billion, one hundred fourteen million, one thousand, two hundred twenty".