340555222221 has 8 divisors (see below), whose sum is σ = 455374701600. Its totient is φ = 226386278832.

The previous prime is 340555222211. The next prime is 340555222247. The reversal of 340555222221 is 122222555043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340555222221 - 2¹⁰ = 340555221197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340555222211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162632775 + ... + 162634868.

It is an arithmetic number, because the mean of its divisors is an integer number (56921837700).

Almost surely, 2^340555222221 is an apocalyptic number.

It is an amenable number.

340555222221 is a deficient number, since it is larger than the sum of its proper divisors (114819479379).

340555222221 is a wasteful number, since it uses less digits than its factorization.

340555222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325267995.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 340555222221 its reverse (122222555043), we get a palindrome (462777777264).

The spelling of 340555222221 in words is "three hundred forty billion, five hundred fifty-five million, two hundred twenty-two thousand, two hundred twenty-one".