213113312112 has 20 divisors (see below), whose sum is σ = 550542723080. Its totient is φ = 71037770688.

The previous prime is 213113312099. The next prime is 213113312221. The reversal of 213113312112 is 211213311312.

It is a super-3 number, since 3×213113312112³ (a number of 35 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2219930287 + ... + 2219930382.

It is an arithmetic number, because the mean of its divisors is an integer number (27527136154).

Almost surely, 2^213113312112 is an apocalyptic number.

It is an amenable number.

213113312112 is an abundant number, since it is smaller than the sum of its proper divisors (337429410968).

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

213113312112 is a wasteful number, since it uses less digits than its factorization.

213113312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439860680 (or 4439860674 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

Adding to 213113312112 its reverse (211213311312), we get a palindrome (424326623424).

The spelling of 213113312112 in words is "two hundred thirteen billion, one hundred thirteen million, three hundred twelve thousand, one hundred twelve".