213443214023321 has 4 divisors (see below), whose sum is σ = 213730486182912. Its totient is φ = 213155941863732.

The previous prime is 213443214023317. The next prime is 213443214023329. The reversal of 213443214023321 is 123320412344312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213443214023321 - 2² = 213443214023317 is a prime.

It is a super-2 number, since 2×213443214023321² (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 (213443214023329) 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, 143636078681 + ... + 143636080166.

It is an arithmetic number, because the mean of its divisors is an integer number (53432621545728).

Almost surely, 2^{213443214023321} is an apocalyptic number.

It is an amenable number.

213443214023321 is a deficient number, since it is larger than the sum of its proper divisors (287272159591).

213443214023321 is an equidigital number, since it uses as much as digits as its factorization.

213443214023321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287272159590.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 213443214023321 its reverse (123320412344312), we get a palindrome (336763626367633).

The spelling of 213443214023321 in words is "two hundred thirteen trillion, four hundred forty-three billion, two hundred fourteen million, twenty-three thousand, three hundred twenty-one".