231101101212 has 24 divisors (see below), whose sum is σ = 539571085200. Its totient is φ = 76985817216.

The previous prime is 231101101183. The next prime is 231101101237. The reversal of 231101101212 is 212101101132.

It is a junction number, because it is equal to n+sod(n) for n = 231101101191 and 231101101200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5965287 + ... + 6003902.

It is an arithmetic number, because the mean of its divisors is an integer number (22482128550).

Almost surely, 2^231101101212 is an apocalyptic number.

It is an amenable number.

231101101212 is an abundant number, since it is smaller than the sum of its proper divisors (308469983988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231101101212 is a wasteful number, since it uses less digits than its factorization.

231101101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970805 (or 11970803 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 231101101212 its reverse (212101101132), we get a palindrome (443202202344).

The spelling of 231101101212 in words is "two hundred thirty-one billion, one hundred one million, one hundred one thousand, two hundred twelve".