101311221213 has 6 divisors (see below), whose sum is σ = 146338430654. Its totient is φ = 67540814136.

The previous prime is 101311221211. The next prime is 101311221229. The reversal of 101311221213 is 312122113101.

It can be written as a sum of positive squares in only one way, i.e., 90940242969 + 10370978244 = 301563^2 + 101838^2 .

It is not a de Polignac number, because 101311221213 - 2¹ = 101311221211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101311221211) 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 5 ways as a sum of consecutive naturals, for example, 5628401170 + ... + 5628401187.

Almost surely, 2^101311221213 is an apocalyptic number.

It is an amenable number.

101311221213 is a deficient number, since it is larger than the sum of its proper divisors (45027209441).

101311221213 is a wasteful number, since it uses less digits than its factorization.

101311221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11256802363 (or 11256802360 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 101311221213 its reverse (312122113101), we get a palindrome (413433334314).

The spelling of 101311221213 in words is "one hundred one billion, three hundred eleven million, two hundred twenty-one thousand, two hundred thirteen".