13121301021 has 8 divisors (see below), whose sum is σ = 17495598720. Its totient is φ = 8747268672.

The previous prime is 13121301019. The next prime is 13121301023. The reversal of 13121301021 is 12010312131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13121301019) and next prime (13121301023).

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

It is not a de Polignac number, because 13121301021 - 2¹ = 13121301019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121301023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147756 + ... + 219258.

It is an arithmetic number, because the mean of its divisors is an integer number (2186949840).

Almost surely, 2^13121301021 is an apocalyptic number.

It is an amenable number.

13121301021 is a deficient number, since it is larger than the sum of its proper divisors (4374297699).

13121301021 is an equidigital number, since it uses as much as digits as its factorization.

13121301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132675.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 13121301021 its reverse (12010312131), we get a palindrome (25131613152).

The spelling of 13121301021 in words is "thirteen billion, one hundred twenty-one million, three hundred one thousand, twenty-one".