101320320011021 has 4 divisors (see below), whose sum is σ = 105725551315872. Its totient is φ = 96915088706172.

The previous prime is 101320320010963. The next prime is 101320320011039. The reversal of 101320320011021 is 120110023023101.

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 not a de Polignac number, because 101320320011021 - 2¹⁸ = 101320319748877 is a prime.

It is a super-2 number, since 2×101320320011021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101320320014021) 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, 2202615652391 + ... + 2202615652436.

It is an arithmetic number, because the mean of its divisors is an integer number (26431387828968).

Almost surely, 2^{101320320011021} is an apocalyptic number.

It is an amenable number.

101320320011021 is a deficient number, since it is larger than the sum of its proper divisors (4405231304851).

101320320011021 is an equidigital number, since it uses as much as digits as its factorization.

101320320011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405231304850.

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

Adding to 101320320011021 its reverse (120110023023101), we get a palindrome (221430343034122).

The spelling of 101320320011021 in words is "one hundred one trillion, three hundred twenty billion, three hundred twenty million, eleven thousand, twenty-one".