101321021213 has 4 divisors (see below), whose sum is σ = 106653706560. Its totient is φ = 95988335868.

The previous prime is 101321021203. The next prime is 101321021233. The reversal of 101321021213 is 312120123101.

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 101321021213 - 2¹⁶ = 101320955677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101321021191 and 101321021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101321021203) 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, 2666342645 + ... + 2666342682.

It is an arithmetic number, because the mean of its divisors is an integer number (26663426640).

Almost surely, 2^101321021213 is an apocalyptic number.

It is an amenable number.

101321021213 is a deficient number, since it is larger than the sum of its proper divisors (5332685347).

101321021213 is an equidigital number, since it uses as much as digits as its factorization.

101321021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332685346.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101321021213 its reverse (312120123101), we get a palindrome (413441144314).

The spelling of 101321021213 in words is "one hundred one billion, three hundred twenty-one million, twenty-one thousand, two hundred thirteen".