346135324500221 has 4 divisors (see below), whose sum is σ = 348458380369500. Its totient is φ = 343812268630944.

The previous prime is 346135324500151. The next prime is 346135324500241. The reversal of 346135324500221 is 122005423531643.

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 119762687380996 + 226372637119225 = 10943614^2 + 15045685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346135324500221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346135324500241) 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, 1161527934416 + ... + 1161527934713.

It is an arithmetic number, because the mean of its divisors is an integer number (87114595092375).

Almost surely, 2^{346135324500221} is an apocalyptic number.

It is an amenable number.

346135324500221 is a deficient number, since it is larger than the sum of its proper divisors (2323055869279).

346135324500221 is a wasteful number, since it uses less digits than its factorization.

346135324500221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323055869278.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 346135324500221 in words is "three hundred forty-six trillion, one hundred thirty-five billion, three hundred twenty-four million, five hundred thousand, two hundred twenty-one".