212132123 has 16 divisors (see below), whose sum is σ = 250200000. Its totient is φ = 179758656.

The previous prime is 212132119. The next prime is 212132153. The reversal of 212132123 is 321231212.

It is not a de Polignac number, because 212132123 - 2² = 212132119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212132153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27053 + ... + 34001.

It is an arithmetic number, because the mean of its divisors is an integer number (15637500).

Almost surely, 2^212132123 is an apocalyptic number.

212132123 is a deficient number, since it is larger than the sum of its proper divisors (38067877).

212132123 is an frugal number, since it uses more digits than its factorization.

212132123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059 (or 7045 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 212132123 is about 14564.7561943206. The cubic root of 212132123 is about 596.3970401816.

Adding to 212132123 its reverse (321231212), we get a palindrome (533363335).

The spelling of 212132123 in words is "two hundred twelve million, one hundred thirty-two thousand, one hundred twenty-three".