1321102320432 has 40 divisors (see below), whose sum is σ = 3412894013184. Its totient is φ = 440361459264.

The previous prime is 1321102320431. The next prime is 1321102320443. The reversal of 1321102320432 is 2340232011231.

It is a super-2 number, since 2×1321102320432² (a number of 25 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1321102320431) 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, 4703013 + ... + 4975995.

Almost surely, 2^{1321102320432} is an apocalyptic number.

1321102320432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321102320432 is an abundant number, since it is smaller than the sum of its proper divisors (2091791692752).

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

1321102320432 is a wasteful number, since it uses less digits than its factorization.

1321102320432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373817 (or 373811 counting only the distinct ones).

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

Adding to 1321102320432 its reverse (2340232011231), we get a palindrome (3661334331663).

It can be divided in two parts, 132110 and 2320432, that added together give a palindrome (2452542).

The spelling of 1321102320432 in words is "one trillion, three hundred twenty-one billion, one hundred two million, three hundred twenty thousand, four hundred thirty-two".