20221111109 has 4 divisors (see below), whose sum is σ = 20221492704. Its totient is φ = 20220729516.

The previous prime is 20221111103. The next prime is 20221111151. The reversal of 20221111109 is 90111112202.

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 a de Polignac number, because none of the positive numbers 2^k-20221111109 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 (20221111103) 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, 95417 + ... + 222590.

It is an arithmetic number, because the mean of its divisors is an integer number (5055373176).

Almost surely, 2^20221111109 is an apocalyptic number.

It is an amenable number.

20221111109 is a deficient number, since it is larger than the sum of its proper divisors (381595).

20221111109 is an equidigital number, since it uses as much as digits as its factorization.

20221111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381594.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 20221111109 in words is "twenty billion, two hundred twenty-one million, one hundred eleven thousand, one hundred nine".