212030111101 has 2 divisors, whose sum is σ = 212030111102. Its totient is φ = 212030111100.

The previous prime is 212030111039. The next prime is 212030111107. The reversal of 212030111101 is 101111030212.

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., 198692171001 + 13337940100 = 445749^2 + 115490^2 .

It is a cyclic number.

It is not a de Polignac number, because 212030111101 - 2²⁵ = 211996556669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212030111107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106015055550 + 106015055551.

It is an arithmetic number, because the mean of its divisors is an integer number (106015055551).

Almost surely, 2^212030111101 is an apocalyptic number.

It is an amenable number.

212030111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212030111101 is an equidigital number, since it uses as much as digits as its factorization.

212030111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 212030111101 its reverse (101111030212), we get a palindrome (313141141313).

It can be divided in two parts, 212030111 and 101, that added together give a palindrome (212030212).

The spelling of 212030111101 in words is "two hundred twelve billion, thirty million, one hundred eleven thousand, one hundred one".