212321001331 has 8 divisors (see below), whose sum is σ = 219648942000. Its totient is φ = 204993495840.

The previous prime is 212321001281. The next prime is 212321001377. The reversal of 212321001331 is 133100123212.

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 212321001331 - 2¹⁷ = 212320870259 is a prime.

It is a super-2 number, since 2×212321001331² (a number of 23 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 = 212321001299 and 212321001308.

It is not an unprimeable number, because it can be changed into a prime (212321001931) 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, 1118745 + ... + 1294693.

It is an arithmetic number, because the mean of its divisors is an integer number (27456117750).

Almost surely, 2^212321001331 is an apocalyptic number.

212321001331 is a deficient number, since it is larger than the sum of its proper divisors (7327940669).

212321001331 is a wasteful number, since it uses less digits than its factorization.

212321001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217589.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 212321001331 its reverse (133100123212), we get a palindrome (345421124543).

The spelling of 212321001331 in words is "two hundred twelve billion, three hundred twenty-one million, one thousand, three hundred thirty-one".