20122230220321 has 4 divisors (see below), whose sum is σ = 20123483411332. Its totient is φ = 20120977029312.

The previous prime is 20122230220273. The next prime is 20122230220327. The reversal of 20122230220321 is 12302203222102.

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 16249678525921 + 3872551694400 = 4031089^2 + 1967880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122230220321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122230220292 and 20122230220301.

It is not an unprimeable number, because it can be changed into a prime (20122230220327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626571420 + ... + 626603533.

It is an arithmetic number, because the mean of its divisors is an integer number (5030870852833).

Almost surely, 2^{20122230220321} is an apocalyptic number.

It is an amenable number.

20122230220321 is a deficient number, since it is larger than the sum of its proper divisors (1253191011).

20122230220321 is a wasteful number, since it uses less digits than its factorization.

20122230220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253191010.

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

Adding to 20122230220321 its reverse (12302203222102), we get a palindrome (32424433442423).

The spelling of 20122230220321 in words is "twenty trillion, one hundred twenty-two billion, two hundred thirty million, two hundred twenty thousand, three hundred twenty-one".