320101021421 has 4 divisors (see below), whose sum is σ = 323208798432. Its totient is φ = 316993244412.

The previous prime is 320101021403. The next prime is 320101021463. The reversal of 320101021421 is 124120101023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320101021421 - 2¹⁰ = 320101020397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320101021421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320101021921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1553888351 + ... + 1553888556.

It is an arithmetic number, because the mean of its divisors is an integer number (80802199608).

Almost surely, 2^320101021421 is an apocalyptic number.

It is an amenable number.

320101021421 is a deficient number, since it is larger than the sum of its proper divisors (3107777011).

320101021421 is a wasteful number, since it uses less digits than its factorization.

320101021421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107777010.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 320101021421 its reverse (124120101023), we get a palindrome (444221122444).

The spelling of 320101021421 in words is "three hundred twenty billion, one hundred one million, twenty-one thousand, four hundred twenty-one".