212103112231 has 32 divisors (see below), whose sum is σ = 223315651328. Its totient is φ = 201276472320.

The previous prime is 212103112223. The next prime is 212103112241. The reversal of 212103112231 is 132211301212.

It is a cyclic number.

It is not a de Polignac number, because 212103112231 - 2³ = 212103112223 is a prime.

It is a super-2 number, since 2×212103112231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212103112199 and 212103112208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212103112201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92499121 + ... + 92501413.

It is an arithmetic number, because the mean of its divisors is an integer number (6978614104).

Almost surely, 2^212103112231 is an apocalyptic number.

212103112231 is a deficient number, since it is larger than the sum of its proper divisors (11212539097).

212103112231 is a wasteful number, since it uses less digits than its factorization.

212103112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212103112231 its reverse (132211301212), we get a palindrome (344314413443).

The spelling of 212103112231 in words is "two hundred twelve billion, one hundred three million, one hundred twelve thousand, two hundred thirty-one".