321121132021 has 8 divisors (see below), whose sum is σ = 321730488000. Its totient is φ = 320512021440.

The previous prime is 321121132019. The next prime is 321121132051. The reversal of 321121132021 is 120231121123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321121132021 - 2¹ = 321121132019 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 321121132021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321121132051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2673270 + ... + 2790808.

It is an arithmetic number, because the mean of its divisors is an integer number (40216311000).

Almost surely, 2^321121132021 is an apocalyptic number.

It is an amenable number.

321121132021 is a deficient number, since it is larger than the sum of its proper divisors (609355979).

321121132021 is a wasteful number, since it uses less digits than its factorization.

321121132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122699.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 321121132021 its reverse (120231121123), we get a palindrome (441352253144).

The spelling of 321121132021 in words is "three hundred twenty-one billion, one hundred twenty-one million, one hundred thirty-two thousand, twenty-one".