101021213101 has 4 divisors (see below), whose sum is σ = 101585577600. Its totient is φ = 100456848604.

The previous prime is 101021213099. The next prime is 101021213123. The reversal of 101021213101 is 101312120101.

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 101021213101 - 2¹ = 101021213099 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 (101021213171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282181981 + ... + 282182338.

It is an arithmetic number, because the mean of its divisors is an integer number (25396394400).

Almost surely, 2^101021213101 is an apocalyptic number.

It is an amenable number.

101021213101 is a deficient number, since it is larger than the sum of its proper divisors (564364499).

101021213101 is an equidigital number, since it uses as much as digits as its factorization.

101021213101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564364498.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 101021213101 its reverse (101312120101), we get a palindrome (202333333202).

The spelling of 101021213101 in words is "one hundred one billion, twenty-one million, two hundred thirteen thousand, one hundred one".