212001121100123 has 2 divisors, whose sum is σ = 212001121100124. Its totient is φ = 212001121100122.

The previous prime is 212001121100089. The next prime is 212001121100213. The reversal of 212001121100123 is 321001121100212.

It is a happy number.

Together with next prime (212001121100213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212001121100123 - 2⁶ = 212001121100059 is a prime.

It is not a weakly prime, because it can be changed into another prime (212001121190123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000560550061 + 106000560550062.

It is an arithmetic number, because the mean of its divisors is an integer number (106000560550062).

Almost surely, 2^{212001121100123} is an apocalyptic number.

212001121100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001121100123 is an equidigital number, since it uses as much as digits as its factorization.

212001121100123 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 212001121100123 its reverse (321001121100212), we get a palindrome (533002242200335).

The spelling of 212001121100123 in words is "two hundred twelve trillion, one billion, one hundred twenty-one million, one hundred thousand, one hundred twenty-three".