340042301221 has 16 divisors (see below), whose sum is σ = 401804124160. Its totient is φ = 281606952240.

The previous prime is 340042301191. The next prime is 340042301239. The reversal of 340042301221 is 122103240043.

It is a cyclic number.

It is not a de Polignac number, because 340042301221 - 2¹⁵ = 340042268453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340042301192 and 340042301201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340042301251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131441 + ... + 1400086.

It is an arithmetic number, because the mean of its divisors is an integer number (25112757760).

Almost surely, 2^340042301221 is an apocalyptic number.

340042301221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

340042301221 is a deficient number, since it is larger than the sum of its proper divisors (61761822939).

340042301221 is a wasteful number, since it uses less digits than its factorization.

340042301221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532184.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 340042301221 its reverse (122103240043), we get a palindrome (462145541264).

The spelling of 340042301221 in words is "three hundred forty billion, forty-two million, three hundred one thousand, two hundred twenty-one".