1421021323320 has 64 divisors (see below), whose sum is σ = 4264269840000. Its totient is φ = 378831831168.

The previous prime is 1421021323301. The next prime is 1421021323339. The reversal of 1421021323320 is 233231201241.

It is an interprime number because it is at equal distance from previous prime (1421021323301) and next prime (1421021323339).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1248370 + ... + 2097729.

It is an arithmetic number, because the mean of its divisors is an integer number (66629216250).

Almost surely, 2^{1421021323320} is an apocalyptic number.

1421021323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421021323320 is an abundant number, since it is smaller than the sum of its proper divisors (2843248516680).

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

1421021323320 is a wasteful number, since it uses less digits than its factorization.

1421021323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349652 (or 3349648 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1421021323320 its reverse (233231201241), we get a palindrome (1654252524561).

The spelling of 1421021323320 in words is "one trillion, four hundred twenty-one billion, twenty-one million, three hundred twenty-three thousand, three hundred twenty".