350145251133221 has 4 divisors (see below), whose sum is σ = 350145344651052. Its totient is φ = 350145157615392.

The previous prime is 350145251133199. The next prime is 350145251133233. The reversal of 350145251133221 is 122331152541053.

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

It can be written as a sum of positive squares in 2 ways, for example, as 126705865576900 + 223439385556321 = 11256370^2 + 14947889^2 .

It is a cyclic number.

It is not a de Polignac number, because 350145251133221 - 2¹⁰ = 350145251132197 is a prime.

It is a super-2 number, since 2×350145251133221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350145251133241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40897790 + ... + 48712623.

It is an arithmetic number, because the mean of its divisors is an integer number (87536336162763).

Almost surely, 2^{350145251133221} is an apocalyptic number.

It is an amenable number.

350145251133221 is a deficient number, since it is larger than the sum of its proper divisors (93517831).

350145251133221 is an equidigital number, since it uses as much as digits as its factorization.

350145251133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93517830.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 350145251133221 in words is "three hundred fifty trillion, one hundred forty-five billion, two hundred fifty-one million, one hundred thirty-three thousand, two hundred twenty-one".