342220250621 has 4 divisors (see below), whose sum is σ = 350567086044. Its totient is φ = 333873415200.

The previous prime is 342220250599. The next prime is 342220250639. The reversal of 342220250621 is 126052022243.

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 162901032100 + 179319218521 = 403610^2 + 423461^2 .

It is a cyclic number.

It is not a de Polignac number, because 342220250621 - 2³⁴ = 325040381437 is a prime.

It is a super-2 number, since 2×342220250621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342220259621) 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, 4173417650 + ... + 4173417731.

It is an arithmetic number, because the mean of its divisors is an integer number (87641771511).

Almost surely, 2^342220250621 is an apocalyptic number.

It is an amenable number.

342220250621 is a deficient number, since it is larger than the sum of its proper divisors (8346835423).

342220250621 is an equidigital number, since it uses as much as digits as its factorization.

342220250621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8346835422.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 342220250621 its reverse (126052022243), we get a palindrome (468272272864).

The spelling of 342220250621 in words is "three hundred forty-two billion, two hundred twenty million, two hundred fifty thousand, six hundred twenty-one".