355116218931211 has 4 divisors (see below), whose sum is σ = 373806546243400. Its totient is φ = 336425891619024.

The previous prime is 355116218931203. The next prime is 355116218931251. The reversal of 355116218931211 is 112139812611553.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 355116218931211 - 2³ = 355116218931203 is a prime.

It is a super-2 number, since 2×355116218931211² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355116218931251) 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, 9345163656066 + ... + 9345163656103.

It is an arithmetic number, because the mean of its divisors is an integer number (93451636560850).

Almost surely, 2^{355116218931211} is an apocalyptic number.

355116218931211 is a deficient number, since it is larger than the sum of its proper divisors (18690327312189).

355116218931211 is a wasteful number, since it uses less digits than its factorization.

355116218931211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18690327312188.

The product of its digits is 388800, while the sum is 49.

The spelling of 355116218931211 in words is "three hundred fifty-five trillion, one hundred sixteen billion, two hundred eighteen million, nine hundred thirty-one thousand, two hundred eleven".