212111100133 has 2 divisors, whose sum is σ = 212111100134. Its totient is φ = 212111100132.

The previous prime is 212111100101. The next prime is 212111100151. The reversal of 212111100133 is 331001111212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122208273889 + 89902826244 = 349583^2 + 299838^2 .

It is a cyclic number.

It is not a de Polignac number, because 212111100133 - 2⁵ = 212111100101 is a prime.

It is a super-2 number, since 2×212111100133² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212111100833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055550066 + 106055550067.

It is an arithmetic number, because the mean of its divisors is an integer number (106055550067).

Almost surely, 2^212111100133 is an apocalyptic number.

It is an amenable number.

212111100133 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111100133 is an equidigital number, since it uses as much as digits as its factorization.

212111100133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 212111100133 its reverse (331001111212), we get a palindrome (543112211345).

The spelling of 212111100133 in words is "two hundred twelve billion, one hundred eleven million, one hundred thousand, one hundred thirty-three".