20221221103 has 2 divisors, whose sum is σ = 20221221104. Its totient is φ = 20221221102.

The previous prime is 20221221091. The next prime is 20221221113. The reversal of 20221221103 is 30112212202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20221221103 - 2⁵ = 20221221071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20221221113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110610551 + 10110610552.

It is an arithmetic number, because the mean of its divisors is an integer number (10110610552).

Almost surely, 2^20221221103 is an apocalyptic number.

20221221103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221221103 is an equidigital number, since it uses as much as digits as its factorization.

20221221103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20221221103 its reverse (30112212202), we get a palindrome (50333433305).

The spelling of 20221221103 in words is "twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred three".