212113103 has 4 divisors (see below), whose sum is σ = 212144088. Its totient is φ = 212082120.

The previous prime is 212113081. The next prime is 212113117. The reversal of 212113103 is 301311212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212113103 - 2⁶ = 212113039 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 (212113903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176 + ... + 20597.

It is an arithmetic number, because the mean of its divisors is an integer number (53036022).

Almost surely, 2^212113103 is an apocalyptic number.

212113103 is a deficient number, since it is larger than the sum of its proper divisors (30985).

212113103 is a wasteful number, since it uses less digits than its factorization.

212113103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30984.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 212113103 is about 14564.1032336358. The cubic root of 212113103 is about 596.3792151102.

Adding to 212113103 its reverse (301311212), we get a palindrome (513424315).

The spelling of 212113103 in words is "two hundred twelve million, one hundred thirteen thousand, one hundred three".