212232101321 has 4 divisors (see below), whose sum is σ = 212654034432. Its totient is φ = 211810168212.

The previous prime is 212232101317. The next prime is 212232101329. The reversal of 212232101321 is 123101232212.

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 212232101321 - 2² = 212232101317 is a prime.

It is a super-2 number, since 2×212232101321² (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 = 212232101293 and 212232101302.

It is not an unprimeable number, because it can be changed into a prime (212232101329) 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, 210965801 + ... + 210966806.

It is an arithmetic number, because the mean of its divisors is an integer number (53163508608).

Almost surely, 2^212232101321 is an apocalyptic number.

It is an amenable number.

212232101321 is a deficient number, since it is larger than the sum of its proper divisors (421933111).

212232101321 is an equidigital number, since it uses as much as digits as its factorization.

212232101321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421933110.

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

Adding to 212232101321 its reverse (123101232212), we get a palindrome (335333333533).

The spelling of 212232101321 in words is "two hundred twelve billion, two hundred thirty-two million, one hundred one thousand, three hundred twenty-one".