335421131221 has 32 divisors (see below), whose sum is σ = 384520089600. Its totient is φ = 289787952000.

The previous prime is 335421131219. The next prime is 335421131257. The reversal of 335421131221 is 122131124533.

It is a cyclic number.

It is not a de Polignac number, because 335421131221 - 2¹ = 335421131219 is a prime.

It is a super-2 number, since 2×335421131221² (a number of 24 digits) contains 22 as substring.

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 335421131221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (335421131321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20493081 + ... + 20509441.

It is an arithmetic number, because the mean of its divisors is an integer number (12016252800).

Almost surely, 2^335421131221 is an apocalyptic number.

335421131221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

335421131221 is a deficient number, since it is larger than the sum of its proper divisors (49098958379).

335421131221 is a wasteful number, since it uses less digits than its factorization.

335421131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17481.

The product of its digits is 4320, while the sum is 28.

Adding to 335421131221 its reverse (122131124533), we get a palindrome (457552255754).

The spelling of 335421131221 in words is "three hundred thirty-five billion, four hundred twenty-one million, one hundred thirty-one thousand, two hundred twenty-one".