20212111103 has 2 divisors, whose sum is σ = 20212111104. Its totient is φ = 20212111102.

The previous prime is 20212111013. The next prime is 20212111147. The reversal of 20212111103 is 30111121202.

Together with previous prime (20212111013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212111103 - 2⁸ = 20212110847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212111303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106055551 + 10106055552.

It is an arithmetic number, because the mean of its divisors is an integer number (10106055552).

Almost surely, 2^20212111103 is an apocalyptic number.

20212111103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212111103 is an equidigital number, since it uses as much as digits as its factorization.

20212111103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20212111103 its reverse (30111121202), we get a palindrome (50323232305).

The spelling of 20212111103 in words is "twenty billion, two hundred twelve million, one hundred eleven thousand, one hundred three".