340220123013221 has 16 divisors (see below), whose sum is σ = 371197834444800. Its totient is φ = 309250515705600.

The previous prime is 340220123013217. The next prime is 340220123013313. The reversal of 340220123013221 is 122310321022043.

It is a cyclic number.

It is not a de Polignac number, because 340220123013221 - 2² = 340220123013217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340220123063221) 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, 4002971036 + ... + 4003056026.

It is an arithmetic number, because the mean of its divisors is an integer number (23199864652800).

Almost surely, 2^{340220123013221} is an apocalyptic number.

It is an amenable number.

340220123013221 is a deficient number, since it is larger than the sum of its proper divisors (30977711431579).

340220123013221 is a wasteful number, since it uses less digits than its factorization.

340220123013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128380.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 340220123013221 its reverse (122310321022043), we get a palindrome (462530444035264).

The spelling of 340220123013221 in words is "three hundred forty trillion, two hundred twenty billion, one hundred twenty-three million, thirteen thousand, two hundred twenty-one".