354324121005221 has 4 divisors (see below), whose sum is σ = 354328920723072. Its totient is φ = 354319321287372.

The previous prime is 354324121005149. The next prime is 354324121005271. The reversal of 354324121005221 is 122500121423453.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 354324121005221 - 2¹⁰ = 354324121004197 is a prime.

It is a super-2 number, since 2×354324121005221² (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 (354324121005271) 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, 2399748191 + ... + 2399895836.

It is an arithmetic number, because the mean of its divisors is an integer number (88582230180768).

Almost surely, 2^{354324121005221} is an apocalyptic number.

It is an amenable number.

354324121005221 is a deficient number, since it is larger than the sum of its proper divisors (4799717851).

354324121005221 is an equidigital number, since it uses as much as digits as its factorization.

354324121005221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799717850.

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 354324121005221 its reverse (122500121423453), we get a palindrome (476824242428674).

The spelling of 354324121005221 in words is "three hundred fifty-four trillion, three hundred twenty-four billion, one hundred twenty-one million, five thousand, two hundred twenty-one".