1320421124668 has 96 divisors (see below), whose sum is σ = 2522679828480. Its totient is φ = 602892702720.

The previous prime is 1320421124657. The next prime is 1320421124677. The reversal of 1320421124668 is 8664211240231.

It is a happy number.

It is a super-2 number, since 2×1320421124668² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1320421124668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115993705 + ... + 116005087.

It is an arithmetic number, because the mean of its divisors is an integer number (26277914880).

Almost surely, 2^{1320421124668} is an apocalyptic number.

It is an amenable number.

1320421124668 is a deficient number, since it is larger than the sum of its proper divisors (1202258703812).

1320421124668 is a wasteful number, since it uses less digits than its factorization.

1320421124668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11987 (or 11985 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

Adding to 1320421124668 its reverse (8664211240231), we get a palindrome (9984632364899).

The spelling of 1320421124668 in words is "one trillion, three hundred twenty billion, four hundred twenty-one million, one hundred twenty-four thousand, six hundred sixty-eight".