1321422122420 has 24 divisors (see below), whose sum is σ = 2779469498400. Its totient is φ = 527714936352.

The previous prime is 1321422122417. The next prime is 1321422122431. The reversal of 1321422122420 is 242212241231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321422122420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53356850 + ... + 53381609.

It is an arithmetic number, because the mean of its divisors is an integer number (115811229100).

Almost surely, 2^{1321422122420} is an apocalyptic number.

1321422122420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321422122420 is an abundant number, since it is smaller than the sum of its proper divisors (1458047375980).

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

1321422122420 is a wasteful number, since it uses less digits than its factorization.

1321422122420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106739087 (or 106739085 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1321422122420 its reverse (242212241231), we get a palindrome (1563634363651).

The spelling of 1321422122420 in words is "one trillion, three hundred twenty-one billion, four hundred twenty-two million, one hundred twenty-two thousand, four hundred twenty".