1320231444421 has 8 divisors (see below), whose sum is σ = 1356586957440. Its totient is φ = 1284132861312.

The previous prime is 1320231444401. The next prime is 1320231444431. The reversal of 1320231444421 is 1244441320231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320231444421 is a prime.

It is a super-2 number, since 2×1320231444421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320231444401) 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, 64222060 + ... + 64242613.

It is an arithmetic number, because the mean of its divisors is an integer number (169573369680).

Almost surely, 2^{1320231444421} is an apocalyptic number.

It is an amenable number.

1320231444421 is a deficient number, since it is larger than the sum of its proper divisors (36355513019).

1320231444421 is a wasteful number, since it uses less digits than its factorization.

1320231444421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128464955.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1320231444421 its reverse (1244441320231), we get a palindrome (2564672764652).

The spelling of 1320231444421 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, four hundred forty-four thousand, four hundred twenty-one".