20212130111 has 2 divisors, whose sum is σ = 20212130112. Its totient is φ = 20212130110.

The previous prime is 20212130089. The next prime is 20212130123. The reversal of 20212130111 is 11103121202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212130111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212130311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106065055 + 10106065056.

It is an arithmetic number, because the mean of its divisors is an integer number (10106065056).

Almost surely, 2^20212130111 is an apocalyptic number.

20212130111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212130111 is an equidigital number, since it uses as much as digits as its factorization.

20212130111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20212130111 its reverse (11103121202), we get a palindrome (31315251313).

It can be divided in two parts, 202121 and 30111, that added together give a palindrome (232232).

The spelling of 20212130111 in words is "twenty billion, two hundred twelve million, one hundred thirty thousand, one hundred eleven".