212201100111023 has 2 divisors, whose sum is σ = 212201100111024. Its totient is φ = 212201100111022.

The previous prime is 212201100110999. The next prime is 212201100111043. The reversal of 212201100111023 is 320111001102212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212201100111023 is a prime.

It is a super-2 number, since 2×212201100111023² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212201100110992 and 212201100111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212201100111043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100550055511 + 106100550055512.

It is an arithmetic number, because the mean of its divisors is an integer number (106100550055512).

Almost surely, 2^{212201100111023} is an apocalyptic number.

212201100111023 is a deficient number, since it is larger than the sum of its proper divisors (1).

212201100111023 is an equidigital number, since it uses as much as digits as its factorization.

212201100111023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212201100111023 its reverse (320111001102212), we get a palindrome (532312101213235).

The spelling of 212201100111023 in words is "two hundred twelve trillion, two hundred one billion, one hundred million, one hundred eleven thousand, twenty-three".