336354116221 has 4 divisors (see below), whose sum is σ = 336363314652. Its totient is φ = 336344917792.

The previous prime is 336354116213. The next prime is 336354116257. The reversal of 336354116221 is 122611453633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122611453633 = 17 ⋅7212438449.

It can be written as a sum of positive squares in 2 ways, for example, as 320651520121 + 15702596100 = 566261^2 + 125310^2 .

It is a cyclic number.

It is not a de Polignac number, because 336354116221 - 2³ = 336354116213 is a prime.

It is a super-2 number, since 2×336354116221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (336354116201) 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, 4544146 + ... + 4617571.

It is an arithmetic number, because the mean of its divisors is an integer number (84090828663).

Almost surely, 2^336354116221 is an apocalyptic number.

It is an amenable number.

336354116221 is a deficient number, since it is larger than the sum of its proper divisors (9198431).

336354116221 is an equidigital number, since it uses as much as digits as its factorization.

336354116221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9198430.

The product of its digits is 77760, while the sum is 37.

Adding to 336354116221 its reverse (122611453633), we get a palindrome (458965569854).

The spelling of 336354116221 in words is "three hundred thirty-six billion, three hundred fifty-four million, one hundred sixteen thousand, two hundred twenty-one".