355235121243 has 24 divisors (see below), whose sum is σ = 524101032000. Its totient is φ = 231755318784.

The previous prime is 355235121239. The next prime is 355235121247. The reversal of 355235121243 is 342121532553.

355235121243 is a `hidden beast` number, since 3 + 5 + 52 + 351 + 212 + 43 = 666.

It is an interprime number because it is at equal distance from previous prime (355235121239) and next prime (355235121247).

It is not a de Polignac number, because 355235121243 - 2² = 355235121239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 355235121198 and 355235121207.

It is not an unprimeable number, because it can be changed into a prime (355235121247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3592833 + ... + 3690381.

It is an arithmetic number, because the mean of its divisors is an integer number (21837543000).

Almost surely, 2^355235121243 is an apocalyptic number.

355235121243 is a deficient number, since it is larger than the sum of its proper divisors (168865910757).

355235121243 is a wasteful number, since it uses less digits than its factorization.

355235121243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106211 (or 106208 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 355235121243 its reverse (342121532553), we get a palindrome (697356653796).

The spelling of 355235121243 in words is "three hundred fifty-five billion, two hundred thirty-five million, one hundred twenty-one thousand, two hundred forty-three".