212210331123 has 8 divisors (see below), whose sum is σ = 323368123648. Its totient is φ = 121263046344.

The previous prime is 212210331121. The next prime is 212210331133. The reversal of 212210331123 is 321133012212.

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

It is not a de Polignac number, because 212210331123 - 2¹ = 212210331121 is a prime.

It is a super-2 number, since 2×212210331123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10105253863 = 212210331123 / (2 + 1 + 2 + 2 + 1 + 0 + 3 + 3 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212210331123.

It is not an unprimeable number, because it can be changed into a prime (212210331121) 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, 5052626911 + ... + 5052626952.

It is an arithmetic number, because the mean of its divisors is an integer number (40421015456).

Almost surely, 2^212210331123 is an apocalyptic number.

212210331123 is a deficient number, since it is larger than the sum of its proper divisors (111157792525).

212210331123 is a wasteful number, since it uses less digits than its factorization.

212210331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10105253873.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212210331123 its reverse (321133012212), we get a palindrome (533343343335).

The spelling of 212210331123 in words is "two hundred twelve billion, two hundred ten million, three hundred thirty-one thousand, one hundred twenty-three".