1321401708168 has 16 divisors (see below), whose sum is σ = 3303504270480. Its totient is φ = 440467236048.

The previous prime is 1321401708149. The next prime is 1321401708203. The reversal of 1321401708168 is 8618071041231.

It is a super-2 number, since 2×1321401708168² (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 3 ways as a sum of consecutive naturals, for example, 27529202230 + ... + 27529202277.

It is an arithmetic number, because the mean of its divisors is an integer number (206469016905).

Almost surely, 2^{1321401708168} is an apocalyptic number.

It is an amenable number.

1321401708168 is an abundant number, since it is smaller than the sum of its proper divisors (1982102562312).

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

1321401708168 is a wasteful number, since it uses less digits than its factorization.

1321401708168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55058404516 (or 55058404512 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

Adding to 1321401708168 its reverse (8618071041231), we get a palindrome (9939472749399).

The spelling of 1321401708168 in words is "one trillion, three hundred twenty-one billion, four hundred one million, seven hundred eight thousand, one hundred sixty-eight".