101111123212 has 24 divisors (see below), whose sum is σ = 193157197632. Its totient is φ = 45929394000.

The previous prime is 101111123207. The next prime is 101111123219. The reversal of 101111123212 is 212321111101.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (101111123219) 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 7 ways as a sum of consecutive naturals, for example, 687414 + ... + 821437.

It is an arithmetic number, because the mean of its divisors is an integer number (8048216568).

Almost surely, 2^101111123212 is an apocalyptic number.

It is an amenable number.

101111123212 is a deficient number, since it is larger than the sum of its proper divisors (92046074420).

101111123212 is a wasteful number, since it uses less digits than its factorization.

101111123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510389 (or 1510387 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 101111123212 its reverse (212321111101), we get a palindrome (313432234313).

The spelling of 101111123212 in words is "one hundred one billion, one hundred eleven million, one hundred twenty-three thousand, two hundred twelve".