351221243555222 has 4 divisors (see below), whose sum is σ = 526831865332836. Its totient is φ = 175610621777610.

The previous prime is 351221243555191. The next prime is 351221243555227. The reversal of 351221243555222 is 222555342122153.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351221243555227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87805310888804 + ... + 87805310888807.

It is an arithmetic number, because the mean of its divisors is an integer number (131707966333209).

Almost surely, 2^{351221243555222} is an apocalyptic number.

351221243555222 is a deficient number, since it is larger than the sum of its proper divisors (175610621777614).

351221243555222 is a wasteful number, since it uses less digits than its factorization.

351221243555222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175610621777613.

The product of its digits is 1440000, while the sum is 44.

Adding to 351221243555222 its reverse (222555342122153), we get a palindrome (573776585677375).

The spelling of 351221243555222 in words is "three hundred fifty-one trillion, two hundred twenty-one billion, two hundred forty-three million, five hundred fifty-five thousand, two hundred twenty-two".