1321421343036 has 24 divisors (see below), whose sum is σ = 3089495472000. Its totient is φ = 439591066032.

The previous prime is 1321421343023. The next prime is 1321421343037. The reversal of 1321421343036 is 6303431241231.

It is a junction number, because it is equal to n+sod(n) for n = 1321421342988 and 1321421343006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321421343037) 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, 110333136 + ... + 110345111.

It is an arithmetic number, because the mean of its divisors is an integer number (128728978000).

Almost surely, 2^{1321421343036} is an apocalyptic number.

It is an amenable number.

1321421343036 is an abundant number, since it is smaller than the sum of its proper divisors (1768074128964).

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

1321421343036 is a wasteful number, since it uses less digits than its factorization.

1321421343036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220678753 (or 220678751 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 1321421343036 its reverse (6303431241231), we get a palindrome (7624852584267).

The spelling of 1321421343036 in words is "one trillion, three hundred twenty-one billion, four hundred twenty-one million, three hundred forty-three thousand, thirty-six".