212010123 has 32 divisors (see below), whose sum is σ = 313346880. Its totient is φ = 126696960.

The previous prime is 212010119. The next prime is 212010133. The reversal of 212010123 is 321010212.

It is not a de Polignac number, because 212010123 - 2² = 212010119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212010099 and 212010108.

It is not an unprimeable number, because it can be changed into a prime (212010133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224833 + ... + 225773.

It is an arithmetic number, because the mean of its divisors is an integer number (9792090).

Almost surely, 2^212010123 is an apocalyptic number.

212010123 is a deficient number, since it is larger than the sum of its proper divisors (101336757).

212010123 is a wasteful number, since it uses less digits than its factorization.

212010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 212010123 is about 14560.5673996586. The cubic root of 212010123 is about 596.2826863050.

Adding to 212010123 its reverse (321010212), we get a palindrome (533020335).

The spelling of 212010123 in words is "two hundred twelve million, ten thousand, one hundred twenty-three".