4020013320121 has 8 divisors (see below), whose sum is σ = 4028127922440. Its totient is φ = 4011899568768.

The previous prime is 4020013320097. The next prime is 4020013320137. The reversal of 4020013320121 is 1210233100204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 983794194496 + 3036219125625 = 991864^2 + 1742475^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020013320121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020013324121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9711045 + ... + 10116541.

It is an arithmetic number, because the mean of its divisors is an integer number (503515990305).

Almost surely, 2^{4020013320121} is an apocalyptic number.

It is an amenable number.

4020013320121 is a deficient number, since it is larger than the sum of its proper divisors (8114602319).

4020013320121 is a wasteful number, since it uses less digits than its factorization.

4020013320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425483.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 4020013320121 its reverse (1210233100204), we get a palindrome (5230246420325).

The spelling of 4020013320121 in words is "four trillion, twenty billion, thirteen million, three hundred twenty thousand, one hundred twenty-one".