321230102012021 has 4 divisors (see below), whose sum is σ = 321278913764844. Its totient is φ = 321181290259200.

The previous prime is 321230102011997. The next prime is 321230102012069. The reversal of 321230102012021 is 120210201032123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141636895276900 + 179593206735121 = 11901130^2 + 13401239^2 .

It is a cyclic number.

It is not a de Polignac number, because 321230102012021 - 2¹⁸ = 321230101749877 is a prime.

It is a super-2 number, since 2×321230102012021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321230102011984 and 321230102012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321230102015021) 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, 24405866540 + ... + 24405879701.

It is an arithmetic number, because the mean of its divisors is an integer number (80319728441211).

Almost surely, 2^{321230102012021} is an apocalyptic number.

It is an amenable number.

321230102012021 is a deficient number, since it is larger than the sum of its proper divisors (48811752823).

321230102012021 is an equidigital number, since it uses as much as digits as its factorization.

321230102012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48811752822.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 321230102012021 its reverse (120210201032123), we get a palindrome (441440303044144).

The spelling of 321230102012021 in words is "three hundred twenty-one trillion, two hundred thirty billion, one hundred two million, twelve thousand, twenty-one".