20211202144321 has 4 divisors (see below), whose sum is σ = 20257241329600. Its totient is φ = 20165162959044.

The previous prime is 20211202144267. The next prime is 20211202144373. The reversal of 20211202144321 is 12344120211202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20211202144321 - 2³³ = 20202612209729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211202144381) 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, 23019591981 + ... + 23019592858.

It is an arithmetic number, because the mean of its divisors is an integer number (5064310332400).

Almost surely, 2^{20211202144321} is an apocalyptic number.

It is an amenable number.

20211202144321 is a deficient number, since it is larger than the sum of its proper divisors (46039185279).

20211202144321 is an equidigital number, since it uses as much as digits as its factorization.

20211202144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46039185278.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 20211202144321 its reverse (12344120211202), we get a palindrome (32555322355523).

The spelling of 20211202144321 in words is "twenty trillion, two hundred eleven billion, two hundred two million, one hundred forty-four thousand, three hundred twenty-one".