1321130233320 has 64 divisors (see below), whose sum is σ = 3964849344000. Its totient is φ = 352171738368.

The previous prime is 1321130233223. The next prime is 1321130233333. The reversal of 1321130233320 is 233320311231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698255 + ... + 2350814.

It is an arithmetic number, because the mean of its divisors is an integer number (61950771000).

Almost surely, 2^{1321130233320} is an apocalyptic number.

1321130233320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321130233320 is an abundant number, since it is smaller than the sum of its proper divisors (2643719110680).

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

1321130233320 is a wasteful number, since it uses less digits than its factorization.

1321130233320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051802 (or 4051798 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1321130233320 its reverse (233320311231), we get a palindrome (1554450544551).

The spelling of 1321130233320 in words is "one trillion, three hundred twenty-one billion, one hundred thirty million, two hundred thirty-three thousand, three hundred twenty".