212340440121001 has 8 divisors (see below), whose sum is σ = 215083569493800. Its totient is φ = 209605250342400.

The previous prime is 212340440120999. The next prime is 212340440121011. The reversal of 212340440121001 is 100121044043212.

It can be written as a sum of positive squares in 4 ways, for example, as 33019952197401 + 179320487923600 = 5746299^2 + 13391060^2 .

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 212340440121001 - 2¹ = 212340440120999 is a prime.

It is a super-2 number, since 2×212340440121001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212340440121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984844716 + ... + 1984951693.

It is an arithmetic number, because the mean of its divisors is an integer number (26885446186725).

Almost surely, 2^{212340440121001} is an apocalyptic number.

It is an amenable number.

212340440121001 is a deficient number, since it is larger than the sum of its proper divisors (2743129372799).

212340440121001 is an equidigital number, since it uses as much as digits as its factorization.

212340440121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969797099.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 212340440121001 its reverse (100121044043212), we get a palindrome (312461484164213).

The spelling of 212340440121001 in words is "two hundred twelve trillion, three hundred forty billion, four hundred forty million, one hundred twenty-one thousand, one".