1331221255230 has 64 divisors (see below), whose sum is σ = 3334136214528. Its totient is φ = 339527823360.

The previous prime is 1331221255183. The next prime is 1331221255241. The reversal of 1331221255230 is 325521221331.

It is a super-2 number, since 2×1331221255230² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8311767 + ... + 8470413.

It is an arithmetic number, because the mean of its divisors is an integer number (52095878352).

Almost surely, 2^{1331221255230} is an apocalyptic number.

1331221255230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331221255230 is an abundant number, since it is smaller than the sum of its proper divisors (2002914959298).

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

1331221255230 is a wasteful number, since it uses less digits than its factorization.

1331221255230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170841.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1331221255230 its reverse (325521221331), we get a palindrome (1656742476561).

The spelling of 1331221255230 in words is "one trillion, three hundred thirty-one billion, two hundred twenty-one million, two hundred fifty-five thousand, two hundred thirty".