20021222321101 has 4 divisors (see below), whose sum is σ = 20074048765600. Its totient is φ = 19968395876604.

The previous prime is 20021222321059. The next prime is 20021222321141. The reversal of 20021222321101 is 10112322212002.

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 20021222321101 - 2¹⁷ = 20021222190029 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 (20021222321141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26413221681 + ... + 26413222438.

It is an arithmetic number, because the mean of its divisors is an integer number (5018512191400).

Almost surely, 2^{20021222321101} is an apocalyptic number.

It is an amenable number.

20021222321101 is a deficient number, since it is larger than the sum of its proper divisors (52826444499).

20021222321101 is an equidigital number, since it uses as much as digits as its factorization.

20021222321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52826444498.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20021222321101 its reverse (10112322212002), we get a palindrome (30133544533103).

The spelling of 20021222321101 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, three hundred twenty-one thousand, one hundred one".