213111112112 has 10 divisors (see below), whose sum is σ = 412902779748. Its totient is φ = 106555556048.

The previous prime is 213111112103. The next prime is 213111112127. The reversal of 213111112112 is 211211111312.

It is a super-2 number, since 2×213111112112² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6659722238 + ... + 6659722269.

Almost surely, 2^213111112112 is an apocalyptic number.

It is an amenable number.

213111112112 is a deficient number, since it is larger than the sum of its proper divisors (199791667636).

213111112112 is a wasteful number, since it uses less digits than its factorization.

213111112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319444515 (or 13319444509 counting only the distinct ones).

The product of its digits is 24, while the sum is 17.

Adding to 213111112112 its reverse (211211111312), we get a palindrome (424322223424).

The spelling of 213111112112 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twelve thousand, one hundred twelve".