321010121 has 8 divisors (see below), whose sum is σ = 327941064. Its totient is φ = 314133120.

The previous prime is 321010049. The next prime is 321010163. The reversal of 321010121 is 121010123.

321010121 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 143161225 + 177848896 = 11965^2 + 13336^2 .

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 321010121 - 2¹⁴ = 320993737 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321010321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340 + ... + 25373.

It is an arithmetic number, because the mean of its divisors is an integer number (40992633).

Almost surely, 2^321010121 is an apocalyptic number.

It is an amenable number.

321010121 is a deficient number, since it is larger than the sum of its proper divisors (6930943).

321010121 is a wasteful number, since it uses less digits than its factorization.

321010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26971.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 321010121 is about 17916.7553145094. The cubic root of 321010121 is about 684.7093238085.

Adding to 321010121 its reverse (121010123), we get a palindrome (442020244).

It can be divided in two parts, 3210 and 10121, that added together give a palindrome (13331).

The spelling of 321010121 in words is "three hundred twenty-one million, ten thousand, one hundred twenty-one".