355222212312213 has 6 divisors (see below), whose sum is σ = 513098751117654. Its totient is φ = 236814808208136.

The previous prime is 355222212312193. The next prime is 355222212312281. The reversal of 355222212312213 is 312213212222553.

355222212312213 is a `hidden beast` number, since 3 + 5 + 5 + 222 + 212 + 3 + 1 + 2 + 213 = 666.

It can be written as a sum of positive squares in only one way, i.e., 331589459321604 + 23632752990609 = 18209598^2 + 4861353^2 .

It is not a de Polignac number, because 355222212312213 - 2⁵ = 355222212312181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355222210312213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19734567350670 + ... + 19734567350687.

It is an arithmetic number, because the mean of its divisors is an integer number (85516458519609).

Almost surely, 2^{355222212312213} is an apocalyptic number.

It is an amenable number.

355222212312213 is a deficient number, since it is larger than the sum of its proper divisors (157876538805441).

355222212312213 is a wasteful number, since it uses less digits than its factorization.

355222212312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39469134701363 (or 39469134701360 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

Adding to 355222212312213 its reverse (312213212222553), we get a palindrome (667435424534766).

The spelling of 355222212312213 in words is "three hundred fifty-five trillion, two hundred twenty-two billion, two hundred twelve million, three hundred twelve thousand, two hundred thirteen".