350220515515121 has 2 divisors, whose sum is σ = 350220515515122. Its totient is φ = 350220515515120.

The previous prime is 350220515515111. The next prime is 350220515515141. The reversal of 350220515515121 is 121515515022053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191004976407025 + 159215539108096 = 13820455^2 + 12618064^2 .

It is a cyclic number.

It is not a de Polignac number, because 350220515515121 - 2¹⁰ = 350220515514097 is a prime.

It is not a weakly prime, because it can be changed into another prime (350220515515111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175110257757560 + 175110257757561.

It is an arithmetic number, because the mean of its divisors is an integer number (175110257757561).

Almost surely, 2^{350220515515121} is an apocalyptic number.

It is an amenable number.

350220515515121 is a deficient number, since it is larger than the sum of its proper divisors (1).

350220515515121 is an equidigital number, since it uses as much as digits as its factorization.

350220515515121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75000, while the sum is 38.

The spelling of 350220515515121 in words is "three hundred fifty trillion, two hundred twenty billion, five hundred fifteen million, five hundred fifteen thousand, one hundred twenty-one".