212120313123103 has 16 divisors (see below), whose sum is σ = 264462284722176. Its totient is φ = 165288183409440.

The previous prime is 212120313123091. The next prime is 212120313123107. The reversal of 212120313123103 is 301321313021212.

It is not a de Polignac number, because 212120313123103 - 2⁹ = 212120313122591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120313123107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34201825 + ... + 39924997.

It is an arithmetic number, because the mean of its divisors is an integer number (16528892795136).

Almost surely, 2^{212120313123103} is an apocalyptic number.

212120313123103 is a deficient number, since it is larger than the sum of its proper divisors (52341971599073).

212120313123103 is a wasteful number, since it uses less digits than its factorization.

212120313123103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204534.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 212120313123103 its reverse (301321313021212), we get a palindrome (513441626144315).

The spelling of 212120313123103 in words is "two hundred twelve trillion, one hundred twenty billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred three".