20221222111 has 4 divisors (see below), whose sum is σ = 20287089592. Its totient is φ = 20155354632.

The previous prime is 20221222061. The next prime is 20221222117. The reversal of 20221222111 is 11122212202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20221222111 - 2⁷ = 20221221983 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 (20221222117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32933280 + ... + 32933893.

It is an arithmetic number, because the mean of its divisors is an integer number (5071772398).

Almost surely, 2^20221222111 is an apocalyptic number.

20221222111 is a deficient number, since it is larger than the sum of its proper divisors (65867481).

20221222111 is an equidigital number, since it uses as much as digits as its factorization.

20221222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65867480.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20221222111 its reverse (11122212202), we get a palindrome (31343434313).

Subtracting from 20221222111 its reverse (11122212202), we obtain a palindrome (9099009909).

The spelling of 20221222111 in words is "twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred eleven".