10111123212 has 24 divisors (see below), whose sum is σ = 23612040816. Its totient is φ = 3367600128.

The previous prime is 10111123189. The next prime is 10111123241. The reversal of 10111123212 is 21232111101.

It is a junction number, because it is equal to n+sod(n) for n = 10111123191 and 10111123200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331573 + ... + 360780.

It is an arithmetic number, because the mean of its divisors is an integer number (983835034).

Almost surely, 2^10111123212 is an apocalyptic number.

10111123212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10111123212 is an abundant number, since it is smaller than the sum of its proper divisors (13500917604).

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

10111123212 is a wasteful number, since it uses less digits than its factorization.

10111123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693577 (or 693575 counting only the distinct ones).

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

Adding to 10111123212 its reverse (21232111101), we get a palindrome (31343234313).

The spelling of 10111123212 in words is "ten billion, one hundred eleven million, one hundred twenty-three thousand, two hundred twelve".