101321203133021 has 4 divisors (see below), whose sum is σ = 101321268122844. Its totient is φ = 101321138143200.

The previous prime is 101321203132991. The next prime is 101321203133039. The reversal of 101321203133021 is 120331302123101.

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 76120913572900 + 25200289560121 = 8724730^2 + 5019989^2 .

It is a cyclic number.

It is not a de Polignac number, because 101321203133021 - 2⁴² = 96923156621917 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 (101321203153021) 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 3 ways as a sum of consecutive naturals, for example, 30097400 + ... + 33294081.

It is an arithmetic number, because the mean of its divisors is an integer number (25330317030711).

Almost surely, 2^{101321203133021} is an apocalyptic number.

It is an amenable number.

101321203133021 is a deficient number, since it is larger than the sum of its proper divisors (64989823).

101321203133021 is an equidigital number, since it uses as much as digits as its factorization.

101321203133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64989822.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 101321203133021 its reverse (120331302123101), we get a palindrome (221652505256122).

The spelling of 101321203133021 in words is "one hundred one trillion, three hundred twenty-one billion, two hundred three million, one hundred thirty-three thousand, twenty-one".