21020131302101 has 8 divisors (see below), whose sum is σ = 21309371347200. Its totient is φ = 20731470318000.

The previous prime is 21020131302097. The next prime is 21020131302103. The reversal of 21020131302101 is 10120313102012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21020131302101 - 2² = 21020131302097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21020131302101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020131302103) 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 7 ways as a sum of consecutive naturals, for example, 144692150 + ... + 144837351.

It is an arithmetic number, because the mean of its divisors is an integer number (2663671418400).

Almost surely, 2^{21020131302101} is an apocalyptic number.

It is an amenable number.

21020131302101 is a deficient number, since it is larger than the sum of its proper divisors (289240045099).

21020131302101 is an equidigital number, since it uses as much as digits as its factorization.

21020131302101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289530499.

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

Adding to 21020131302101 its reverse (10120313102012), we get a palindrome (31140444404113).

The spelling of 21020131302101 in words is "twenty-one trillion, twenty billion, one hundred thirty-one million, three hundred two thousand, one hundred one".