20330122210421 has 4 divisors (see below), whose sum is σ = 20330181427500. Its totient is φ = 20330062993344.

The previous prime is 20330122210397. The next prime is 20330122210487. The reversal of 20330122210421 is 12401222103302.

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 15906297592900 + 4423824617521 = 3988270^2 + 2103289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20330122210421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330122210121) 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, 29090546 + ... + 29781203.

It is an arithmetic number, because the mean of its divisors is an integer number (5082545356875).

Almost surely, 2^{20330122210421} is an apocalyptic number.

It is an amenable number.

20330122210421 is a deficient number, since it is larger than the sum of its proper divisors (59217079).

20330122210421 is an equidigital number, since it uses as much as digits as its factorization.

20330122210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59217078.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20330122210421 its reverse (12401222103302), we get a palindrome (32731344313723).

The spelling of 20330122210421 in words is "twenty trillion, three hundred thirty billion, one hundred twenty-two million, two hundred ten thousand, four hundred twenty-one".