20221021101 has 4 divisors (see below), whose sum is σ = 26961361472. Its totient is φ = 13480680732.

The previous prime is 20221021091. The next prime is 20221021103. The reversal of 20221021101 is 10112012202.

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 not a de Polignac number, because 20221021101 - 2¹⁰ = 20221020077 is a prime.

It is a super-3 number, since 3×20221021101³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221021103) 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, 3370170181 + ... + 3370170186.

It is an arithmetic number, because the mean of its divisors is an integer number (6740340368).

Almost surely, 2^20221021101 is an apocalyptic number.

It is an amenable number.

20221021101 is a deficient number, since it is larger than the sum of its proper divisors (6740340371).

20221021101 is an equidigital number, since it uses as much as digits as its factorization.

20221021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740340370.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20221021101 its reverse (10112012202), we get a palindrome (30333033303).

The spelling of 20221021101 in words is "twenty billion, two hundred twenty-one million, twenty-one thousand, one hundred one".