340220111006221 has 2 divisors, whose sum is σ = 340220111006222. Its totient is φ = 340220111006220.

The previous prime is 340220111006201. The next prime is 340220111006231. The reversal of 340220111006221 is 122600111022043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325010586802500 + 15209524203721 = 18028050^2 + 3899939^2 .

It is a cyclic number.

It is not a de Polignac number, because 340220111006221 - 2²⁷ = 340219976788493 is a prime.

It is a super-2 number, since 2×340220111006221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340220111006201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170110055503110 + 170110055503111.

It is an arithmetic number, because the mean of its divisors is an integer number (170110055503111).

Almost surely, 2^{340220111006221} is an apocalyptic number.

It is an amenable number.

340220111006221 is a deficient number, since it is larger than the sum of its proper divisors (1).

340220111006221 is an equidigital number, since it uses as much as digits as its factorization.

340220111006221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 340220111006221 its reverse (122600111022043), we get a palindrome (462820222028264).

The spelling of 340220111006221 in words is "three hundred forty trillion, two hundred twenty billion, one hundred eleven million, six thousand, two hundred twenty-one".