21342002242201 has 4 divisors (see below), whose sum is σ = 21342012186292. Its totient is φ = 21341992298112.

The previous prime is 21342002242199. The next prime is 21342002242291. The reversal of 21342002242201 is 10224220024312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17791321536576 + 3550680705625 = 4217976^2 + 1884325^2 .

It is a cyclic number.

It is not a de Polignac number, because 21342002242201 - 2¹ = 21342002242199 is a prime.

It is a super-3 number, since 3×21342002242201³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342002242291) 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, 271380 + ... + 6538933.

It is an arithmetic number, because the mean of its divisors is an integer number (5335503046573).

Almost surely, 2^{21342002242201} is an apocalyptic number.

It is an amenable number.

21342002242201 is a deficient number, since it is larger than the sum of its proper divisors (9944091).

21342002242201 is an equidigital number, since it uses as much as digits as its factorization.

21342002242201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9944090.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21342002242201 its reverse (10224220024312), we get a palindrome (31566222266513).

The spelling of 21342002242201 in words is "twenty-one trillion, three hundred forty-two billion, two million, two hundred forty-two thousand, two hundred one".