212123113 has 8 divisors (see below), whose sum is σ = 217740960. Its totient is φ = 206572800.

The previous prime is 212123083. The next prime is 212123117. The reversal of 212123113 is 311321212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212123113 - 2⁹ = 212122601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212123117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10488 + ... + 23113.

It is an arithmetic number, because the mean of its divisors is an integer number (27217620).

Almost surely, 2^212123113 is an apocalyptic number.

It is an amenable number.

212123113 is a deficient number, since it is larger than the sum of its proper divisors (5617847).

212123113 is a wasteful number, since it uses less digits than its factorization.

212123113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33767.

The product of its digits is 72, while the sum is 16.

The square root of 212123113 is about 14564.4468827347. The cubic root of 212123113 is about 596.3885963663.

Adding to 212123113 its reverse (311321212), we get a palindrome (523444325).

The spelling of 212123113 in words is "two hundred twelve million, one hundred twenty-three thousand, one hundred thirteen".