101012323021 has 4 divisors (see below), whose sum is σ = 101017541500. Its totient is φ = 101007104544.

The previous prime is 101012322997. The next prime is 101012323033. The reversal of 101012323021 is 120323210101.

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 43685598121 + 57326724900 = 209011^2 + 239430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101012323021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101012322986 and 101012323004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101012323081) 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, 2580096 + ... + 2618953.

It is an arithmetic number, because the mean of its divisors is an integer number (25254385375).

Almost surely, 2^101012323021 is an apocalyptic number.

It is an amenable number.

101012323021 is a deficient number, since it is larger than the sum of its proper divisors (5218479).

101012323021 is an equidigital number, since it uses as much as digits as its factorization.

101012323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218478.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 101012323021 its reverse (120323210101), we get a palindrome (221335533122).

The spelling of 101012323021 in words is "one hundred one billion, twelve million, three hundred twenty-three thousand, twenty-one".