101232212321 has 4 divisors (see below), whose sum is σ = 101239262100. Its totient is φ = 101225162544.

The previous prime is 101232212303. The next prime is 101232212359. The reversal of 101232212321 is 123212232101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69579888400 + 31652323921 = 263780^2 + 177911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101232212321 is a prime.

It is a super-2 number, since 2×101232212321² (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 = 101232212293 and 101232212302.

It is not an unprimeable number, because it can be changed into a prime (101232212821) 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, 3503306 + ... + 3532083.

It is an arithmetic number, because the mean of its divisors is an integer number (25309815525).

Almost surely, 2^101232212321 is an apocalyptic number.

It is an amenable number.

101232212321 is a deficient number, since it is larger than the sum of its proper divisors (7049779).

101232212321 is an equidigital number, since it uses as much as digits as its factorization.

101232212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049778.

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

Adding to 101232212321 its reverse (123212232101), we get a palindrome (224444444422).

The spelling of 101232212321 in words is "one hundred one billion, two hundred thirty-two million, two hundred twelve thousand, three hundred twenty-one".