1220313121320 has 32 divisors (see below), whose sum is σ = 3660939364320. Its totient is φ = 325416832320.

The previous prime is 1220313121319. The next prime is 1220313121351. The reversal of 1220313121320 is 231213130221.

It is a super-2 number, since 2×1220313121320² (a number of 25 digits) contains 22 as substring.

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, 5084637886 + ... + 5084638125.

It is an arithmetic number, because the mean of its divisors is an integer number (114404355135).

Almost surely, 2^{1220313121320} is an apocalyptic number.

1220313121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220313121320 is an abundant number, since it is smaller than the sum of its proper divisors (2440626243000).

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

1220313121320 is a wasteful number, since it uses less digits than its factorization.

1220313121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10169276025 (or 10169276021 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1220313121320 its reverse (231213130221), we get a palindrome (1451526251541).

The spelling of 1220313121320 in words is "one trillion, two hundred twenty billion, three hundred thirteen million, one hundred twenty-one thousand, three hundred twenty".