342320122021 has 4 divisors (see below), whose sum is σ = 342321782572. Its totient is φ = 342318461472.

The previous prime is 342320121989. The next prime is 342320122057. The reversal of 342320122021 is 120221023243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218247808900 + 124072313121 = 467170^2 + 352239^2 .

It is a cyclic number.

It is not a de Polignac number, because 342320122021 - 2⁵ = 342320121989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 342320121983 and 342320122001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342320122061) 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, 468510 + ... + 950863.

It is an arithmetic number, because the mean of its divisors is an integer number (85580445643).

Almost surely, 2^342320122021 is an apocalyptic number.

It is an amenable number.

342320122021 is a deficient number, since it is larger than the sum of its proper divisors (1660551).

342320122021 is a wasteful number, since it uses less digits than its factorization.

342320122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660550.

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

Adding to 342320122021 its reverse (120221023243), we get a palindrome (462541145264).

The spelling of 342320122021 in words is "three hundred forty-two billion, three hundred twenty million, one hundred twenty-two thousand, twenty-one".