10111211212 has 12 divisors (see below), whose sum is σ = 17695621440. Its totient is φ = 5055319376.

The previous prime is 10111211203. The next prime is 10111211213. The reversal of 10111211212 is 21211211101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10111211192 and 10111211201.

It is not an unprimeable number, because it can be changed into a prime (10111211213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21318 + ... + 143794.

It is an arithmetic number, because the mean of its divisors is an integer number (1474635120).

Almost surely, 2^10111211212 is an apocalyptic number.

It is an amenable number.

10111211212 is a deficient number, since it is larger than the sum of its proper divisors (7584410228).

10111211212 is a wasteful number, since it uses less digits than its factorization.

10111211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143120 (or 143118 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10111211212 its reverse (21211211101), we get a palindrome (31322422313).

The spelling of 10111211212 in words is "ten billion, one hundred eleven million, two hundred eleven thousand, two hundred twelve".